Recent content by Tod denneny

thanks everyone, one cap bad cant believe i missed it

I got this amp; it was not working, so I powered it up to take a look, and the R38 was on fire. started to check voltages and tr04 had 32 volts at all pins .Removed tr04 check and replaced also replaced r38. Repowered up, same issue. I started to pull every transistor; none were bad. including...

This unit is driving me nuts

thanks again, guys Here is the other part

r38 the part of the drawing goes to the other channel its has no issue

before burnout

Sansui AU-5500 burning up Tr24 and R38 Check all transistors and all resistors and diodes just can not find the issue. 35 volts on all pins EC and B of TR24 Any help would be greatly appreciated

hi guys looking for help i have signal on both side or R4 no idea why .. could anyone take a look and send a few ideas my way thanks so much

Need data sheet 2sa896 cant seem to find it online

https://1drv.ms/b/s!AhMMKmTHuv6RgZpn_zUWk9SjdHSdFw?e=BuMh9W

sorry for the confusion it getting 120 volts ac if i look at the incoming voltage it is steeped up to 165V into this board see attached i will keep looking , from my understanding this board is a real pain in the ass i have two of these units and both have power supply issues really nice...

Sorry did not think i had too the schematic shows i should be getting 65V i am getting 134v as i marked on the scimatic

Being looking at this board for a few hours checked all transistors and change most diodes i marked the voltages i am getting at test points could anyone take a look and send me in the right direction.. thanks so much for any help

Being looking at this board for a few hours checked all transistors and change most diodes i marked the voltages i am getting at test points could anyone take a look and send me in the right direction.. most of the voltages are twice what they should be see attached thanks so much for any help

its a TL047 once i replaced it all good it was shorted and was pulling down the -18 volts There is two of them in the unit so i swapped them and still had the problem so i did not think the TL047 was the issues but come to find out both were shored out.