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TH-42PZ81B, TV shuts down with a 10 blink error

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ProDave:
I am resurecting this thread as I have the same 10 blink fault but on a different set, a TH46PZ85B.  Different part numbers and different component and connector references, but the same fault.

I ONLY have 5V standby.  There is no 15V from the main PSU.

What I can't understand is should there be +15V from the main PSU when the set is in standby?  I get nothing.

I assume at start up, even if not on in standby, it must power up the +15V briefly in order to check the A board low voltages. I don't see any transient activity on the +15V even briefly at first power up.

I am possibly looking at a PSU repair as the only PSU#s I can find are £100 which I think is too much. The PSU on this set is  ETX2MM704MG

downunder:

Hi Dave, never had any luck powering a Panasonic PSU out of the set, on the bench. Their startup sequence is too convoluted for that.
Here's the sequence for TH-47PX7 and you'll see why.

Bruce

ProDave:
See in the other similar thread. I "fixed" it by removing the little chop capacitor from the little sub board.

Now it's working it's clear it goes through a complicated start up process and it was obviously failing early on with the 15V missing.  My confusion was how does it know this fault when it is in standby, and the answer is this set does not power up into standby, it tries to start up straight away.

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