"John" wrote in message
.. .

"ian field" wrote in message
...


Resolder all the joints on the CRT-PCB - intermittent dry-joints have
become routine since manufacturers started using lead free solder,
especially where there is temperature cycling like from the CRT heater!

After reading the first two responses, I went looking for bad solder
joints on the neck board and saw nothing obvious. I went ahead and
resolder the joints starting from the green cathode pin to the driving
transistor. Some of the joints looked suspicious (the solder bead up
around the component pin), so I made sure the new solder spread.

I also polished the CRT pin (it turn blued) and applied a thin layer of
solder to it.

After that, the TV has been working fine for two days. Can't conclusively
say it is fixed, but looks promising -- previously it has never lasted
more than 2 hours without losing the green.

Thanks to all who responded.


--
Posted via a free Usenet account from http://www.teranews.com


One of the features of lead free solder is that a bad joint can still look
ok!