Discussion in 'Pioneer Audio' started by revision-88, Jan 10, 2019 at 7:07 PM.
Good..Can you post a photo of your main filter caps? Both topside and bottom side?
Of course. 6800uF 50v Nichivons. I thought I wired them in correctly.
Are you seeing -41vdc on pin 10 of the AWR-060 power supply board?
I'm seeing -47v there.
Looks OK. And your getting +/- 30volts DC at the collectors of the outputs.
+33 at Q11/12, -33 at Q13/14.
Are the two STV3 diodes still intact ( no broken leads)?
They all look good to me.
For some reason those STV diodes are prone to breakage of the leads. Thats why I asked.
The red and white ones on the power amp board, right? Those and all the other diodes in the amp look fine.
Have you tested Q5-Q10 out of circuit?
I have not yet, I'll pull and test them when I have a chance.
? Usually there black or tan in color. Horseshoe shaped. And fastened to the large to the heatsink.
I don't see anything matching that description on any of the boards.
D5 and D6 Soldered to the amplifier board and screw mounted to the heatsink.
Ah thanks. Found them. The leads look just fine to me.
Happy hunting. I have no more suggestions until we know the condition of all the transistors on the amplifier board.
No problem, thanks for all the help. Fortunately there's not too many of them so I'll post here as soon as I have new info.
Separate names with a comma.