Possible leaky clamping diode? Been nemises in many wierd problems, not
only with Rica Sets!!
"Brad" wrote in message
...
Hi,

I finally found something that may be the cause of this problem. I
will
report back in a week or so after I confirm it.

This was the first test I performed on this TV, which "past the test".
I used a capacitor tester's "leak" test (very sensitive) set at 50V and
checked all the button switches. Absolutely no sign of "leakage".
I won't tell you all the other things I did. Sometimes it pays to
re-test.

This time, when the TV started it's off/on "ritual" again, I unplugged
the
TV and I performed another "leak" test on the button switches.
Wow!!! now I have a "leak" indication. Imagine, an intermittent
"leak"!!!
I opened the circuit trace to all the button switches. Now, I will use
the
remote control on this TV for the next week or so to confirm. Please
"stay tuned".
Brad

On Mon, 19 Nov 2007 18:31:55 GMT, in sci.electronics.repair you wrote:

Hi,

Has anyone fixed a late model TV (mfg 2005/2006) with this problem:

You turn on the TV, after the screen lights up, etc. the TV turns itself
off.
About 5 seconds later, the TV turns itself on, etc. You have to pull the
plug to stop the off/on cycle. Sometimes, you turn on the TV and it
will
play for a while before this off/on cycle begins.

IMPORTANT: The TV may work just fine for a few days, then it happens.
Eventually, the TV begins to work fine again for another two or three days
before it happens again.

I have serviced TVs for years and I performed many tests on this
RCA TV, chassis M134C (mfg 01/06).

I thought about replacing the micro or the eeprom, but I could be
wasting my time and money?

Thanks in advance, Brad

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