Lou:
You will need to open er up and do some old fashioned troubleshooting and
testing...... or take it to a service shop.
The intermittent symptoms that you described can be caused by a lot of
different faults including faulty components that may be heat sensitive or
even by comparatively simple faults like dry, cracked, cold, or otherwise
faulty solder connections especially near and around the high heat producing
components such as power resistors, diodes, power transistors, regulators
and other chips mounted on heat sinks and around the flyback and HOT.
For this type of intermittent problem the service manual and schematics are
just about useless.... in fact, the service manual and schematics are not
very useful to the technically inexperienced..... there are NO step by step
troubleshooting and repair instructions, usually a qualified, knowledgeable
and experienced tech who can usually fix the majority of failures WITHOUT
the documentation will find it helpful with in depth troubleshooting and
tougher repairs.
A good place to learn more about television failures and repairs is at
the website for this newsgroup at
http://www.repairfaq.org/
There, with some searching and reading, you will find a wealth of television
troubleshooting tips, component testing methods, repair procedures, and
IMPORTANT safety information that will help you to stay away from the very
dangerous and LETHAL electrical shock hazards inside. Be very careful,
these hazards can still be present even when the television is turned off
and unplugged from the AC power.
If, after reading through the repairfaq website, you are still not certain
how to proceed you might be best advised to TAKE your television to a
service shop for at the very least a repair cost estimate so you can make an
intelligent repair decision with facts instead of telephone or internet
guesses.
--
Best Regards,
Daniel Sofie
Electronics Supply & Repair
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"Lou" wrote in message
...
Anyone have any clue where to get some schematics for "off the wall" TV
brands? My niece bought a TV brand new a while back. She had it little
over
a year.. Yep, just past warranty, IT DIED. I am told the company went out
of
business already, which produced it for "K-mart". It is having a Power
Problem. You can plug it in, turn it on and it will come on and play well.
Turn it off, then try to turn it on again, no dice. It won't come on.
Unplug
it for a while, not sure how long - I've done a day, and it will fire back
up. Any ideas?

Lou