Quote:
Originally Posted by jhalphen
Hi to all,
Hi Timmy,
on the following thread on the UK-VRR forum (post #10) you will find 3 pdf files (photo) pertaining to the repair of the Sinclair MTV Series micro-TVs.
Files are too large for this forum.
https://www.vintage-radio.net/forum/...d.php?t=206856
The third one is the most complete (39 pages), recent & interesting, updated data Dec 2021.
Your TV's failure:
do you have a full screen raster or just one bright H line across screen?
If only one super-bright line, reduce brightness to avoid damaging the phosphor.
If you have a raster, the bright slanted lines are the H retrace, visible because brightness pot is set too high.
Can you get a picture?
i suppose you're feeding the set from a ATSC to analogue converter + a RF modulator.
Hope this helps,
Best Regards
jhalphen
Paris/France |
Ok I got it working it turns out there were 2 caps that were bad a 1uf 50v was open and a 4.7uf 50v that tested at 30nf so I changed 3 1uf caps and the 4.7uf and it’s working fine so far now got to put new nicads in and make sure they are charging. These little sets are not easy to work on very tight inside but after seeing it work it’s all worth it. I forgot to mention that all these caps were on the power board and from what I have read the 1uf caps are prone to open in these sets.