Oldskoolfan's latest activity

Hey Guys, its been a few days since I posted any pictures of my progress. Taking my time and doing a lot of reading on the assembly...

I think I made a mistake. Seems I ordered Nichicon VP non-polar electrolytics to recap the control board instead of FG caps. Is this...

Copy that. Ordered the diodes and some fresh caps today. Been running the amp all day with no pops, clicks, or scratchiness.

Watch polarity and only D6

Fair enough!:)

Lower forward voltage. I had your bias problem and Joe suggested changing D6 to the bat41 and it worked perfectly. My bias pot is in the...

I'm on a learning curve here. Why change to a Schottky diode? Also why not D6, D7, and D8?

Change D6 to a Bat 41 diode and it will bring your bias into the correct range with plenty of adjustment

Well, it seems to be working again. Looking at the schematic, I started with Q7 and all the voltages were unstable. I pulled it and...

I seem to recall a substitution list for the obsolete transistors on the control board. Anyone got a link?

That's a different matter. But, do be careful of creating collateral damage during the learning process. I know I usually do...

I likely won't stick any money in it unless I have the part on hand, but I want to run this down for the experience. Mild OCD doncha...

Guess I spoke too soon. 20 minutes after I posted above, it popped. Put a voltmeter on the right channel output and I'm getting a large...

Ok, so here is where it stands; Sorted thru 3 full sets of output transistors from previous rebuilds. Came up with 8 FPL 909's, 2...