Arfa Daily Inscribed thus:

"Baron" wrote in message
...
Arfa Daily Inscribed thus:

I'll be in his shop tomorrow. If I remember, I'll ask if he's had
anything else on those. Was there any prior symptoms ? Did it fail
whilst on, or fail to come out of standby. What exactly is the
standby LED doing ? If it is pulsing, have you tried unplugging the
backlight inverter ?

Arfa

Hi Arfa,
It was running just fine, then without any warning the display went
off and the little red standby LED in the middle of the button
started flashing. 3short, delay, 1long, off, delay then the sequence
starts again.

No I haven't disconnected the backlight panel. There seems to be 6
or 8 inverters on a separate panel running vertically up the left
side, viewed from the rear. There is a single multiway cable
connecting the inverter panel to the PSU board. The backlight panel
is under a metal screen, making it hard to see underneath without
removing fairly substantial metalwork.

Thanks:
--
Best Regards:
Baron.

Hi Arfa,

It's only the plug to the inverter board that you need to remove. From
the described symptoms, I doubt that the problem is going to be that,
but it is common for backlight inverters to fail on all makes of LCD
TV, and the excess load then placed on the PSU's 24v rail can cause
some odd and bizarre startup problems, depending on how and where the
supply monitors it's output voltages and the current draws on the
various rails. Normally, although the connector to the inverter board
has a lot of wires, most of them are just paralleled-up +24v and gnd.
There is often a control wire also.

Yes I did disconnect the cable from the main board to the inverter board
where it connects to the PSU board. It made no difference ! :-(

I've a sneaky feeling that the flashing sequence of the power LED is
trying to tell me something, but I haven't been able to find out what.

I was unable to check further with my mate today, as he is off with
man-flu. The other guy in the shop is more computers than TV, so
doesn't know a lot about TV faults.
Arfa

I'm afraid thats the camp I'm in. 35+ years ago TV's were much more
understandable, read simple, to understand.

Your help is very much appreciated.
Thanks:

PS. At least the old 28" Bush and digibox still work... (*)

--
Best Regards:
Baron.