View Single Post
  #3  
Old 02-20-2022, 11:33 AM
bigboss80's Avatar
bigboss80 bigboss80 is offline
VideoKarma Member
 
Join Date: Feb 2022
Location: Italia/ Sardegna
Posts: 34
Quote:
Originally Posted by zeno View Post
Be sure you are using the right ground. There is a hot ground
in primary & cold ground for secondary voltages.
If you can put up the power supply schematic alone I may
be able to help more, its to small to read.

73 Zeno
LFOD !
Hi, I thank you, I replaced all the electrolytics on the primary , and since I found the diodes bridge so much to remove my doubt, then I managed to find on another circuit I also have resistance from 3.3ohm 10 w, but just current the resistance is jumped immediately, I tried to measure the heads of R601 and there are 240V, I can't understand, there is a short circuit somewhere that puts R601 in parallel to tension of network . Whether it's all the fault of the str, the strange and that only Zener D611 jumped at the beginning.

This scheme should be more detailed

https://drive.google.com/file/d/1BPc...ew?usp=sharing

Service manual

https://drive.google.com/file/d/1RHf...ew?usp=sharing
Reply With Quote