TSL100 help needed

[marcumh]

If you are familiar with the TSL100, I have a question about W2 (near the PI) on the main board that connects to the rear jack board. What function does this connection serve? I can post the schematics if necessary.

When this connection is made (yellow wire with spade lugs) the output is very gimpy. If I remove the connector the output is pretty spot-on.

[sgelectric]

Posting the schematic is always a good idea.

http://www.webphix.com/schematic%20h...sl100_100w.pdf

SG

[marcumh]

LOL,..you are right. I was going to edit and add it but couldn't find the add attachment button,....but I found it now
W2 from the main PCB connects (oddly enough on this amp) to W2 of the rear PCB (there is no connection on W4).

[DrGonz78]

The yellow wire is used as sort of feedback line and yes it was plugged into W4 Rear Jack board on my old amp. Not sure exactly what to ask here other than have you tried to see what happens w/ the yellow wire connected to W4?

[marcumh]

I have tried it in W4. And as far I can tell there is no difference than if it's not plugged at all. I actually have the same problem you had on your thread about the signal coming through on the clean channel with vol and gain down. If I remember correctly you had a bad solder? Unfortunately my solder connection is good but I'm still having the problem with a low level signal passing. So just to be clear your connection from w2 on the main board was connected to w4 on the rear jack board? Maybe this can be a "live with it issue", because otherwise everything seems ok.

[Jazz P Bass]

On the rear jack board, W4 does indeed appear to be the 'feedback' resistor.
W2 ( on the jack board) is not.
I guess you can take your pick.

[marcumh]

Thanks. I may have gotten confused at some point at which connection it was made to on the rear jack board. There is w2 and w4 and one of them is not used. Any insight into the low level signal passing through on the clean ch? Seems to only effect the clean ch and other wise doesn't seem to hurt the operation. It's just a little annoying because I'm pretty sure it shouldn't be there.

[DrGonz78]

Yeah the badly cracked solder joint was W4 on the rear jack board and was the culprit to some of the cross talk. The cross talk that it stopped was the immense drop in volume between 6-8 on the gain knob of the clean channel. After flowing solder on W4 it stopped that crosstalk from happening.

The main clean channel signal bleed did not ever get resolved and I have not read anywhere a solution...

Except this thread claims it as a "blue wire or wires"... Yeah?? OP of that thread was like well that did not explain very much.
http://music-electronics-forum.com/t20863/

So anyway before I took the darn thing apart the bleed through on the clean channel was not an issue. After I got my grubby lil hands all over this beast of an amp I then had the signal bleed trouble. Personally that was the least of my trouble and when I would put the Volume knob up above 7 it would create a nasty sounding hum that got loud up to 10. That amp as way beyond my abilities of practical repair. I say if you only have the bleed through problem then it is not really a major problem, but maybe check out some of the pin cabling that connect on the clean board.