Recent content by Jefferylu98

Ok.. I finally received new parts for right channel. I reassembled the left side to get that back to square one. I went thru the post recommended to review. Wow… I am good with making new hold down straps in the garage no problem. New boards… not so much. Lol. Is there a way to reuse these...

Can/should I put the left side back together??

Ok cool. Is there some mods that have to be done to install new ones??

Crap.. I should have asked you if I should order enough to do both sides??

Parts on order / thank you. hopefully this will fix this old girl.

Second set not good either.

First set/ not looking good.

Ok…. I pulled right side…. Grey NPN are both done I believe. Current both ways. Blue PNP seem fine.

I pulled left side out. Seem to test fine on diode mode if I’m doing it correctly. Blue ones PNP/ grey ones NPN

Ok/ I’ll pull them out/ should I pull both sides out??

The trimmers are the blue square ones. All 4. Testing went as follows. Right side all read 0.7 or 0.8 ohms. Left side emitters were 1.0 ohms. Collector pins 10/16 went thru the roof. That doesn’t make me feel and better. Lol.

What is the best way to test the big/ unobtainable transistors?? Thanks in advance.

Thanks for the speedy reply. The unit had a mild recap several years ago and has run flawless till last week. 150 watt bulb in my dbt.

Hope all is well with everybody. I have a pals 1280 on my bench with no power at all when switched on. I replaced the cement resistor in the soft start circuit and plugged into dim bulb tester. What do you know bright light on dbt. Did continuity test on soft start loop, all good there now...

Fiddling around with it, if I take the glass fuses out in the power supply board (A).. dim bulb tester is stable at a low glow. Instead of high flashing. I have the amp jumpers out already also.