View Single Post
  #3  
Old 10-02-2021, 03:27 PM
obsolete man obsolete man is offline
VideoKarma Member
 
Join Date: Sep 2021
Posts: 16
Quote:
Originally Posted by Electronic M View Post
There's 3 issues I see that have varying degrees of difficulty to fix.

Easy. You may be able to improve the sharpness of the picture adjusting the TVs fine tuning control.

Intermediate. The snow in the picture is probably dirty contacts in the tuner. To fix it that you'll have to disassemble the set enough to get to and remove the VHF tuner shield then spray the moving contacts with tuner cleaner and rotate the channel tuning knob several turns in each direction.

Hard. It looks like the horizontal deflection circuit is intermittently failing and coming back. This requires soldering skills, troubleshooting skills and circuit theory knowledge. If the horizontal stays collapsed for too long unobtainium parts can be destroyed.
I think Easy has been tried. I played with everything on the tv including the fine tune knob. Maybe I'll give Intermediate a try. But I just thought of something. I've been looking at agile modulators that send wireless signals. If dirty contacts is the issue, would that effect wireless reception too?

I hope the issue isn't under your HARD category, that would mean this TV will just be a display prop. LOL! BTW, in the videos you see, there is a shadow moving down that's not present in real life. What is the technical term for this?
Reply With Quote