SA-7100 Part Help

[PinkFlyd]

Hi all,

I'm new to AudioKarma and restoring vintage amps. I have a Pioneer SA-7100 that I have spent some time trying to figure out what is wrong. The left channel is much lower than the right channel. I think I have traced it back to the AWW-004 part. Oddly, this part on the schematics, it says AWW-044, but on the actual part, it is AWW-004. I can't find anything on this part other than in the service manual that says "Compound part for REC terminal" (see below). Another thing is that there are two service manuals, one has more information for troubleshooting and the other has the schematic and foil traces.

This is the one that matches mine:
https://www.vintageshifi.com/repertoire-pdf/pdf/telecharge.php?pdf=Pioneer-SA-7100-Schematic.pdf

This is the other service manual:
https://www.audioservicemanuals.com...a-7100/2468986-pioneer-sa-7100-service-manual (screen shots below). The manual above doesn't have part #s, etc.







It is an odd part. It looks like a capacitor but has 4 inputs. Does anyone know where I would find this part or what I would be able to do to fix this?

Thanks!

 

[PinkFlyd]

I have also found, what appears to be similar, under "W52-004" but haven't had much luck finding any information on it. A google image search revealed the image below. I didn't find anything on a Nichicon AR7004.

 

[markthefixer]

That's the DIN plug connector in the tape 2 "box" on the back.The resistors on the small nearby pc board form a voltage divider for the outgoing connections to pins 1 & 4.

The AWW-044 is a small PC board the resistors are mounted to. Pioneer was still learning how to write decent manuals.

This only is used to connect tape decks, if the level is off, check the resistors as per color code values, since the manual
doesn't cover that itty bitty little pc board.
My opinion is that the tape monitor switches need more deoxiting. Check the total wire path with an ohmmeter, it will stand out if necessary.

 

[PinkFlyd]

Thank you so much! I had deoxit-ed a ton but I just did it again, focusing on that spot and it seems to have made a significant difference, so I am guessing that the AWW-004 part is probably okay and that I can continue on with the recapping and transistor replacement. Oh, and on my unit, there is no PC board or anything. It is just that AWW-004 (AWW-044?) part with 5 pins that they are connected to. No visible resistors.

Really appreciate the help!