Videokarma.org

Go Back   Videokarma.org TV - Video - Vintage Television & Radio Forums > Transistor Portable Televisions

We appreciate your help

in keeping this site going.
 
 
Thread Tools Display Modes
Prev Previous Post   Next Post Next
  #1  
Old 11-12-2017, 01:28 PM
avalon1308 avalon1308 is offline
VideoKarma Member
 
Join Date: Jun 2005
Location: North Italy
Posts: 60
Sony 8-301w no HV

Hi All,
I have 3 set, 2 American ones and one European one, they all suffer from no HV,I have changed all the lytics in the sweep section but no difference, the horiz output transistor measures fine but gets very hot (2SC41). I do have a waveform at the collector at the correct frequency but seems to be distorted and too low.
since it is not easy to reach the components on the board, I am afraid that I will eventually break the PCB and the copper lines.
would someone happen to know if there is a common problem on all these sets. I find it strange to have the same symptoms on all of them. does the flyback transformer go on these sets, I have no means of measuring the transformer.
I would really love to have at least one of them going.
I thank you in advance for your help and advice.

dominique
Reply With Quote
 


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 06:56 PM.



Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
ęCopyright 2012 VideoKarma.org, All rights reserved.