UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post

ppppenguin · 9th Apr 2010, 4:12 pm

Any buzz from the frame timebase? Any whistle from the line timebase? Adjust the frame and line holds up and down to make them more audible. If something's audible that's a very good start.

Any visible distress? Especially in the LOP valve. If there is, need to switch off and track it down.

If no audible evidence of timebases, since you've had the set apart it's worth poking around with a meter to see that HT is getting to where it ought.

At this point, if HT is present, since I'm really a design engineer rather than a TV service guy I tend to dig out the 'scope and see what I can find. John W, Trevor and others with far more experience will have simpler methods.

The worry now is that you could be dealing with extra problems, caused by dismantling and reassembly.

9th Apr 2010, 4:12 pm	#145
ppppenguin Retired Dormant Member Join Date: Dec 2003 Location: North London, UK. Posts: 6,168	Re: Tv62 Any buzz from the frame timebase? Any whistle from the line timebase? Adjust the frame and line holds up and down to make them more audible. If something's audible that's a very good start. Any visible distress? Especially in the LOP valve. If there is, need to switch off and track it down. If no audible evidence of timebases, since you've had the set apart it's worth poking around with a meter to see that HT is getting to where it ought. At this point, if HT is present, since I'm really a design engineer rather than a TV service guy I tend to dig out the 'scope and see what I can find. John W, Trevor and others with far more experience will have simpler methods. The worry now is that you could be dealing with extra problems, caused by dismantling and reassembly.