View Single Post
  #36  
Old 03-30-2023, 09:44 AM
liammc00's Avatar
liammc00 liammc00 is online now
real TVs have a CRT
 
Join Date: Jun 2018
Location: Belpre, Ohio
Posts: 265
Quote:
Originally Posted by Alex KL-1 View Post
Certainly is a hope... is alreaby woking before
The color vanished only after changing flyback, or when you changed components or resolder?
If only was after flyback change, maybe the pulses derived from flyback have different amplitude, upsetting circuits depentent form it, if flyback is a equivalent?
And, a very small invisible solder splotch/blob can maybe ocurred at some position (washing the PCB with isopropyl alcohol using a hard brush may solve it).
The new flyback is an HR diamond so it's not an original. On terms of the color loss it's not a solder bridge as I changed all the caps and resolder the entire board that was done a while ago and it didn't have any trouble until now. When I still thought it was the PSU I took a couple of transistors out test and put them back. I did breck one transotor it was Q457 cupler driver which as porbly guess to horizontal optic cupler IC 469 (PS2021). I did use the NTE replacement for that transistor.

Last edited by liammc00; 03-30-2023 at 11:31 AM.
Reply With Quote