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Purveyors of Electronic, Musical and Vintage goods from then, now and in between. 
Since 1982.

PIONEER SX-780 / SX780 PARTS / SPARES &
PIONEER SX-790 / SX790 STEREO RECEIVER
PARTS / SPARES

 

Pioneer SX-780 / SX780 Stereo Receiver salvage replacement parts spares for sale. Pioneer SX-780 / SX780 & SX-790 / SX790 knobs, pots, switches, relays, meters, capacitors, circuit boards, transformer, outputs, and most other parts for sale.
 

 

20% off sale
on salvage audio & keyboard parts.
 See sales banners on parts pages for details

 

*Note about parts / spares sales

* Our "parts units", parts / spares and related reference information are primarily archived for the purpose of restoration / repair of "Oak Tree Vintage" units first. Only if we do not have a "viable" unit in yet, either already in process or in line to be processed, that may potentially need parts from a "parts unit", will we release available parts for sale (even though they may appear as available for sale to the public). As many of you know, the restoration of a unit can be a long, time consuming process. We may "lock up" parts that we may potentially need in the restoration of a unit (and not necessarily get it marked 'Hold' or 'Sold' on the site right away). Parts are priced according to the "potential value" of the unit they can be applicable to (meaning the amount WE would be willing to pay for the part if that was all that was standing between us having a "shelved unit" or a valuable / sellable unit), time to extract, their rarity & their condition to name a few criteria and likely will be completely unrelated to the original cost / price of a part when it was currently available from the manufacturer.

Parts Photos; We get a number of requests for 'photos' of a specific part. Unfortunately, in most cases that is not practical as the amount of time involved in posting that exceeds the value of the 'unique' part. We will sometimes post photos of less 'unique' parts, if there is a greater chance of them being available in multiple quantities, or on a more 'repeat' basis.

Parts, general condition / circuit board condition; Most of our parts are from 'salvage / donor' units. While we don't sell parts that are 'known' to be bad, occasionally parts will need further adjustment, cleaning, 'tweaking', or in the case of circuit boards, may need old, conductive glue / epoxy further cleaned, and some 'common' parts / components such as, aging / leaky capacitors, parts whose values have drifted, and some epoxy transistors may need to be replaced due to 'green / black / furry' legs, or because those parts were marked as 'sold separately'. Some circuit boards may have 'tired' "landing / solder pads", or severed traces, or cold / bad solder joints which can require solder re-flow or 'jumpers'. Unless noted, circuit boards will be 'crack / split / break' free.

Parts pricing; Most of our parts price / value will be based on a few things. Firstly, we are in the restoration / refurb business, so we consider what we would be willing to pay for the part if we needed it (which again, is what the parts are listed for in the first place, "our units"). Secondly, the rarity / value of the unit the part(s) fit. The 'Tuning Knob' for a receiver that has a final value of $350 will likely be much less than the "Tuning Knob" for a unit with a final value of $1500 or more (a set of tires for a typical sedan will be $400 to $600. A set for a Lamborghini can be $16,000). Thirdly, the 'rarity' of the part. Forth, the 'condition' of the part. Fifth, the difficulty to extract the part, or success rate for extracting certain parts. Sixth; frankly it's a LOT of work and time to part out a unit. Most take 1 to 3 days of shop time to process. Not only the disassembly, but the 4-15 hours of pre-testing / servicing and just as time consuming can be the amount of time it takes to do all of the research we do and the info we list on many parts for cross-referrencing to other units that my use the same parts by scouring service manuals. On many circuit boards we will list every 'semi-conductor' which is also very time consuming. Lastly, every call or email for a part can require 20 minutes to sometimes over an hour of 'phone support', often (about 70% of the time) with me convincing the potential purchaser that they don't need the part I have to solve their problem.
Sorry to sound like a "whiner" about selling parts, but "time is money".

Shipping: Shipping on most 'small' parts if typically via Postal first class or Postal Priority for both domestic (USA) and international orders. Larger parts such as transformers and drivers (speakers) are typically via FedEx gnd.
Some parts sales such as those for empty 'speaker cabinets', empty 'component cabinets / covers / bonnets' and 'speaker grills' and most are 'doomed' from the start. Due to their size and required packing supplies, the cost of 'packing for safe transit' and shipping are commonly 'disproportionate' to their cost, typically nearly equal to and sometimes greater than the cost of the part.  Think about it. An empty speaker cabinet or stereo receiver case is essentially the same size as a complete one. Yes the weight will be less, but most of items that size are calculated on 'dimensional weight', not actual weight so are commonly just as expensive as shipping a 'complete unit'. Secondly empty component cabinets have to be packed to disallow breakage, typically requiring nearly as much packing materials as an entire unit. Speaker grills have to be 'sandwiched' between foam sheets in large, custom ordered boxes (all relatively expensive).  It is what it is....

A non-response to an email of phone call / voice message request for a part that we don't show on one or our pages, or is already marked "SOLD" will be typical. We simply don't have the time / man-power resources to respond to every query we get for items we don't show as avail. Most folks get that. Having said that, I / we may respond if we have information on a substitution or other useful information relating to it.

A non-response to an email of phone call / voice message request for a part (we may appear to have, but typically 'highlighted in Orange or Yellow'), likely means that we are still determining which parts we are going to need for the restoration or repair of one of our units. Again, the parts are first for the restoration of our units and secondarily for the public market. Since we list the parts available for ourselves, it is not much effort to modify the menu's for web publication, which in turn makes the reference information and occasionally the part available to the public. Frankly, publishing them to the web, in many instances, makes it easier for us to determine if we have the part for our needs as well. The alternative to all of the above would be to not offer them at all to the public, however most parts are available to the public for sale.  Also, parts requests can occasionally take time for us to respond to. While we may have a part listed, and we like to keep the website 100% accurate, occasionally a part will be 'used by us' or 'previously sold' and we by oversight, and we did not get the web listing marked "SOLD", or the part gets  'mis-placed' or 'lost' (laid down somewhere in the warehouse(s) and then it get's lost track of (that happens to our coffee cups all the time, then we find it months later with 'a good batch of 'penicillin' growing in it), so we like to 'lay eyes on it' prior to responding. Sometimes we just can't figure out which cabinet or drawer parts were assigned to (and we're working on a system for that one).

Some folks email / call and want us to respond either way / whether we have the part or not. Again, we simply do not have the time resources to do that. Our time must be utilized on the requests we can fulfill. 
Sorry for all the excuses, but that's how the 'system' (or lack thereof) works.
And, if you don't see it, we likely don't have it.
 Thank you for your understanding.

$20. MINIMUM ORDER


HOME / STUDIO / HI-FI SPEAKER PARTS
CLICK HERE!

 

MOST OF THE PARTS LISTED BELOW ARE FROM SALVAGE UNITS.

 

 

    -



  


(Click on above thumbnails to enlarge photos)
PIONEER SX-780 / SX780 or European / Asian / Military version SX-790 / SX790
STEREO RECEIVER PARTS (we have at least 2 units for parts / spares)

SOME PARTS MAY BE
INTERCHANGEABLE WITH OTHER PIONEER X80 SERIES SUCH AS;
(SX-480, 580, 680, 780, 880, 980, 1080, or SX-1280, SX-1980)
All circuit boards populated with ORIGINAL JAPANESE parts / components, NOT Chinese!!!

- PARTING OUT -

(Some parts from this receiver may be interchangeable with Toshiba model receivers such as Toshiba SA-320, SA-420, SA-735, SA-750 and possibly others. I say this, only based on VERY similar cosmetic similarities between some Pioneer & Toshiba Receivers and their parts. You'll need to do our own research. If anyone has any definitive information on any particular Pioneer to Toshiba substitutions, feel free to inform us.)

All units powered up, but either would not click the relay due to bad or weak output, or would click, but had weak output or bad drivers or a combination of those issues. Inquire for part you need.


Bonnet / Wooden Cover Assembly,
AAM-072 Wood grained, vinyl wrapped case cover bonnet / cabinet  (see also SX-780 SX-790, SX-880, SX-890) clean with only normal, minor scuffs, crisp corners and edges and structurally solid. - $65. SOLD OUT

Bolts / Screws / Fasteners, Bonnet / Cover bolts, ABA-209 - None currently for sale

'Finger nail' sized Veneer chips on L & R, lower front edges, otherwise decent looking, crisp corners and edges and structurally solid.
- $45. SOLD OUT

(Cases, covers and side plate / panels, etc. do not include mounting screws as those are sold separately)

Face panel,
ANB-601 Pioneer SX-780 Face plate with dial glass (less knobs / buttons) decently 'fair'. Minor striations and tics. Glass good. Cond about "7.5" - $45.    


Knobs / Caps / Buttons / Covers
, AAA-050
Tuning knob
(see also SX-580, SX-780, SX-880, SX-890) - $453 Remaining in stock

Knobs / Caps / Buttons / Covers, Tone knobs AAB-175
(Bass, Treble, Function, Turn-over, are interchangeable from all the X80 series. Also works as volume on SX-580 & SX-680) - $40. ea. SOLD OUT
(Knobs may fit other Pioneer units such as SX-480, 580, 680, 880, 980, 1080, or SX-1280)

Knobs / Caps / Buttons / Covers, Volume knob AAB-185
(Volume knob interchangeable with SX-780 / SX-790, SX-880 / SX-890) - $45. ea. 1 Remaining in stock

Knobs / Caps / Buttons / Covers, Function knob AAD-110
(see also SX-450, SX-550, SX-780 / SX-790, SX-880 / SX-890) - $35. ea.

 Knobs / Caps / Buttons / Covers, AAB-176 Small round 'Balance' knob - $35. ea.

Knobs / Caps / Buttons / Covers, AAD-154 Round button 'Push' Switch caps - $25. ea.

Knobs / Caps / Buttons / Covers, Toggle switch caps
AAD-138
SPLIT / 'TUNING FORK' STYLE!!! Loud, Mute, Filter, Tape Monitor, and most others except 'Power' (see also SX-780/ SX-790, SX-820, SX-880 / SX-890, SX-980, SX-1080, SX-1280, SX-1980, SX-3700, SX-3800, SX-3900) SPLIT / 'TUNING FORK' STYLE!!! - $30. ea. SOLD OUT

Knobs / Caps / Buttons / Covers, Power switch Toggle cap 'TAPERED SHAFT' STYLE!!!
AAD-139 (see also SX-780 / 790, SX-880 / 890, 980 / 990, 1080, SX-1280, SX-3900, SX-3900) - $30. SOLD OUT FROM THIS UNIT, (check SX-3900)

Potentiometer / Control
, Bass
Tone control pot ACV-193 (may sub ACV-194) (see also SX-650, SX-780 / 790) - $45. ea.

Potentiometer / Control, Treble Tone control pot ACV-160 ACV-194 (may sub ACV-194) (see also SX-650, SX-780 / 790) - $45. ea.

Potentiometer / Control, Volume Control pot ACV-161 (see also SX-450, SX-550, SX-680, SX-780 / 790, SX-880 / SX-890) $45. ea.

Potentiometer / Control, Balance control pot ACT-019 (see also SX-580, SX-680, SX-780, SX-790, SX-880, SX-890) - $45. ea.

Switch / Selector
, Power toggle switch ALPS ASK-507 (see also SX-780 / 790, SX-3800, SX-3900, 880/890)- $45.

Switch / Selector, De-Emphasis switch ALPS ASH-016
(see also F-28, SX-780 / 790)- $35.

Switch / Selector, Muting / Tone / Mode / Loud switch ALPS AS
K-144 (see also SX-780 / SX-790, SX-880 / SX-890, SX-980 / SX-990, SX-1080, SX-1280, SX-1980) - $35.

Switch / Selector, Function / Duplicate switch ALPS AS
K-145 (see also SX-780 / SX-790, SX-880 / SX-890, SX-1080, SX-1280, SX-1980) - $35.

Switch / Selector, Function switch ALPS ASE-107-A / ASE-108-A
(see also SX-780 / SX-790, SX-880 / SX-890, SX-1080, SX-1280, SX-1980) - $40. SOLD OUT

Meter, AAW-093 Tuning Meter
(see also SX-780 / SX-790) - $35. ea.

Meter, AAW-092 Power Meters
(see also SX-780 / SX-790)- $45. pair

PIONEER SX-780 / SX780 or European / Asian / Military version SX-790 / SX790 PARTS / SPARES

Wheel, AXA-113 Tuning Drum / Plastic string wheel for tuning capacitor - $25.

Flywheel, Tuning Shaft Assembly / Flywheel AXA-211
(see also SX-780 / 790, SX-880 / SX-890) - $55. (maybe one left)

Pointer, Dial 'Pointer' / station indicator AAF-074
(see also SX-780 / 790, SX-880 / SX-890) - $35.

Dial Lamp Sockets (we do not sell the lamps) - $20. ea. (Lamp sockets will fit other Pioneer units such as SX-480, SX-580, SX-680, SX-880, SX-980, SX-1080, or SX-1280)

PIONEER SX-780 / SX780 or European / Asian / Military version SX-790 / SX790 PARTS / SPARES

Transformer, Power supply Transformer  (BANDO BE91h-0001 / Pioneer #ATT-512)- $75. SOLD

Capacitors, Power supply filter Caps ACH-082 (Nippon 50V / 8000 u f uf mf. (Each measures 30mm in diameter x 62mm in height) (see also SX-680, 780 / 790, SA-6800 & SA-7800) - $25. ea.

Output Power Pack, Power amplifier chips  (Darlington / STK 0050 / STK0050 / STK-0050). Originals NOT Chinese FAKE chips - $65. ea.
SOLD OUT

Relay, Type MS4U 48VDC / FRL-264, (Pioneer # ASR-020 (see also SX-880, SX-890) [same as #ASR-032 see also SX-780, SX-790, SX-1050] ) - $35.

Circuit Board, Main circuit board (ANP-784 / GWK-118) FETs; 2SK34 (X4) and transistors / regulators; 2SA850, 2SA904, 2SA912, 2SA979, NEC 2SB536, 2SC945, 2SC1384, 2SC1775, 2SC1885, 2SC2291, 2SD325R, 2SD613 or Mitsubishi 2SD712, Inline packages; Hitachi HA1457 & TA7136P1 (or M5213L) & Pioneer PA3004 protection / relay IC (original Japanese, NOT Chinese) and balance of capacitors, coils, diodes, rectifier diodes, resistors, trim pots
(less control pots, switches, Relays, outputs) - $85.

Circuit Board, Tuning Circuit Board (
#AWE-099 / ANP-786 w/ PA1001A & PA3001A & HA1197 (AM Chip) chips and tuning capacitor,
(plastic string wheel not included)) - $45 SOLD OUT


Jacks / Terminals / Connectors, Headphone Jack AKN-009 (see also SX-450, SX-550, SX-680, SX-750 / 780 / 790, SX-880 / 890) - $25.

Jacks / Terminals / Connectors, Any rear panel Input / Output component ( RCA patch I/O's, AC outlets, Antenna terminals) - $35. ea.

Jacks / Terminals / Connectors, Speaker Output Jacks / terminals / bank AKE-026 (see also SA-6500 & II, SA-6700, SA-6800, SA-7500 II, SX-780 / 790) - $35. ea. bank

Antenna, AM antenna ATB-505 (see also SX-580, SX-680, SX-780/890, SX-880/890, SX-980, SX-1080 & 1280 series receivers, but not SX-1980) (less socket) - $35.

Antenna, AM antenna mounting socket
AXB-012 (see also SX-680, SX-780, SX-880 /
SX-890, SX-980, SX-1080, SX-1280, SX-1980, TX-6700, TX-6800, TX-7800, TX-9000) - $35.

Antenna, AM antenna mounting LINKAGE from socket to antenna
(see also SX-680, SX-780, SX-880 / 890, SX-980, SX-1080, SX-1280, SX-1980, TX-6700, TX-6800, TX-7800, TX-9000) - $35.


Bottom Plate / Cover / Panel, Bottom Plate / panel - None currently for sale

Bolts / Screws / Fasteners, Bottom Plate / Cover bolts, ABA-209 - None currently for sale

Feet Set
ANR-022  (see also SX-680, 780 / 790, SX-880/SX-890) (specify screw-in or snap-in) - $40. set of four (Care must be used when removing or reinstalling the "snap-in" version of the feet as the tabs break off very easily. Advisable to warm them in hot water or the sun prior to installing)


Call or Email for "SHOWN and NOT marked 'SOLD' " part you need.

- Location: PB, West, 2nd set cabs. Dark Grn / most 'left' cab, top drawer. - Revised 3/18/19



HERE     ARE     SOME     ADDITIONAL     RESOURCES     FOR     REPAIR    /    RESTORATION


________________________________________________________________________________________________________________



 


 

- - -

Unless specifically noted, we do not typically sell 'component level' parts such as resistors, diodes, transistors, semiconductors, ic's / integrated circuit chips, ceramic capacitors, led's, bulbs, lamps, belts, etc. We do commonly sell circuit boards / cards which will likely come with those parts attached.
 

*
When we say "some parts "MAY" also fit", that does NOT mean ALL the parts listed 'WILL' fit, and unless we show specific info that a particular part DOES 'cross-pollinate', do not infer that it does or will fit. Only careful research and comparisons, on YOUR part with service manuals, service bulletins, other comparable units, etc., MAY indicate a POSSIBLE substitution. If your situation is 'critical', do not base your decision on information found on this or any other page of this web site and do your own research.

 

HOME / STUDIO / HI-FI SPEAKER PARTS
CLICK HERE!

 

 


 

LINKS TO OUR 'HI-FI' DEPARTMENTS

Amps and
Pre-Amps

Receivers

Cassette
Decks

Tuners

Turntables

8-Track Decks

CD Players

Reel-Reel
Decks

EQs and Signal
Processors

Speakers

Betamax and
VHS VCRs

Turntable Cartridges

Tube Audio

Ne'cessories

Speaker Parts

Record Players

Vintage Radios

Vintage
Walkmans

Headphones

Stereo Parts


Wondering where the "tone" you remember went?....


 

.... Surround yourself with Silver and find it again!


CONTACT INFO BELOW

$20. MINIMUM ORDER

 

                                             

>>>(for 'PARTS'; <<<
as of NOW and for the foreseeable future,
due to staffing / time / resource limitations, we are shifting focus AWAY from MOST 'SALVAGE / USED / DONOR' parts requests at this time with
*only a few exceptions, and will not likely be responding to calls or emails for those type of parts.  We will still process orders for '**non-unique / SKU' parts / accessories that offer an 'on-line payment' option.)

*at our discretion, some requests may still get a response if time allows.
*"unique" would apply to most 'salvage' Hi-Fi / Stereo / Speaker, scooter, MI, Pro-audio parts.
Parts that we normally stock and have a "Buy It" option are not included in the above notice.


    Before calling, PLEASE read the text in below.      
 BEFORE
CALLING

(800) 806-4231 EXT #1
~10:00 AM- ~5:30 PM most days COLORADO / ROCKY MOUNTAIN TIME ZONE


OR

BEFORE EMAILING
 
parts@oaktreevintage.com

>>>(for 'PARTS'; <<<
as of NOW and for the foreseeable future,
due to staffing / time / resource limitations, we are shifting focus AWAY from MOST 'SALVAGE / USED / DONOR' parts requests at this time with
*only a few exceptions, and will not likely be responding to calls or emails for those type of parts.  We will still process orders for '**non-unique / SKU' parts / accessories that offer an 'on-line payment' option.)

*at our discretion, some requests may still get a response if time allows.
*"unique" would apply to most 'salvage' Hi-Fi / Stereo / Speaker, scooter, MI, Pro-audio parts.
Parts that we normally stock and have a "Buy It" option are not included in the above notice.

We DO NOT have your part unless the following conditions are met:

A) You HAVE SEARCHED our page(s) and HAVE FOUND the part you are looking for SPECIFICALLY listed on one of our pages or you have solid information that it's a 'bona fide' substitution for your part (unless noted already, we won't have any further info along those lines)
AND
B) The part that you have found is NOT marked as SOLD or SOLD OUT.


If you do NOT see it listed after thoroughly searching the pertinent page
(likely the page you landed on originally),  
we do not have it,   
nor do we know when
it might come in,   
nor do we maintain "waiting lists" for parts,    
nor do we know who
might have it.

Sorry, but phone and email traffic for parts
we don't have listed or for parts that are already marked "SOLD" has become too consuming of time resources.


 We try to keep these pages 99+% updated.
If you don't see the part you are looking for, simply check the web page periodically as we never know what will show up each day. Thanks!!!!!


ALSO: When e-mailing be sure to include a relevant subject, ie: Brand / Model number / reason for inquiry in the 'SUBJECT LINE'.
SUBJECT
lines left empty, or with 'single word' text like;
"Hello", "Hi", "parts", "stereo", "inquiry", "question", "selling" or similar or similar 'un-qualified' terms may automatically be deleted by Anti-Virus / Spam settings or receive 'Low Priority'.
(Subject lines left empty show up as "No Subject" and are deleted automatically by our anti-spam settings".
We do not return calls / emails for requests for parts we don't show / or have available (we may choose contact with further, useful information).


 SPEAKER PARTS   |   STEREO / HI-FI ELECTRONIC PARTS   |  KEYBOARD PARTS 

___________________________________________

Haven't received a response to your email? See FAQ'S

MAILING:
OAK TREE ENTERPRISES
PO. BOX 6182
COLORADO SPRINGS, CO 80934
U.S.A.


Before ordering by postal mail, please phone or email us about the item and the details of sending your funds. Thank-you.


 SPEAKER PARTS   |   STEREO / HI-FI ELECTRONIC PARTS   |   SELLING-TRADING-CONSIGNING   |  KEYBOARD PARTS   I   FAQ'S  
  CONDITION RATINGS   |   ORDERING / POLICIES    |    WARRANTIES / RETURNS   |   SHIPPING     
 RESTORATION PROCEDURES   |   REPAIRS  | CONTACT PARTS


As much of the price charged for parts is for the 'time to extract' from it's donor unit, unless we send the 'wrong part', parts are NOT returnable.
See our "
Warranties / Returns" page via the link below for more details.


POLICIES, SPECIFICATIONS, AVAILABILITY, INFORMATION AND PRICING SUBJECT TO CHANGE  AT ANYTIME  AND WITHOUT PRIOR NOTICE
and changes may not be posted to web immediately
. Information such as Parts Substitution possibilities, "Circa" dates, original values, etc. are to the best of our knowledge. If you are critically concerned, you should do independent
research on your own prior to ordering or utilizing this information in any way. Manufacturers also are known to change part numbers, specs, circuit designs, specs etc within the same model.
 

Copyright © 1997-2023 Oak Tree Enterprises, LLC

COPYRIGHT INFORMATION