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LG42LG7000 Starting Problems please help

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chrisantony:
Hi

I am new around here with a little tv knowledge but not a guru...Please be kind and not too much technical chat please

I have an lg42lg7000 that has a fault when starting, it boots up, backlights illuminate then it runs through a cycle like one of the inverter transformers is down..backlights light up for 10 seconds go off for 2 seconds then on again, everything else is then redundant, you have to pull the power cable from the back of the set the power button on remote and front panel does not do anything.

I just have a backlight flashing lg at present

Any help with his one would be appreciated

fix2003:
is this psu type PSU MODEL LGP4247-09S ??
if not give number :c017:

chrisantony:
Hi thanks for the reply,

PSU  EAX40157601/17
Main EAX43060102/2

I am begining to believe its the main board fluffed, All voltages are good on psu, with inverter and t cons disconnected I am still geting the same fault.

The 3v on/off voltage is fluctuating from 0v-3v with just the main and psu connected, isnt the 3v a signal from the main?????


Thanks for any further info advice

tlfusion:
Hi, did you manage to resolve issue with 42lg7000.
I have the same model with the same fault.
Regards
TL

chrisantony:

--- Quote from: tlfusion on January 11, 2013,11:52:02 ---Hi, did you manage to resolve issue with 42lg7000.
I have the same model with the same fault.
Regards
TL

--- End quote ---

Hi

I have ordered a board..to be honest I was lucky to find it should be here saturday morning so will let you know.

The only other person I found selling the board was for a new and it was £120.  :03:

After  doing a little more searching I found a couple of polish forums and a couple have had the same problems which turned out to be the main, so fingers crossed

will let you know

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