Hi all, needing a little help if possible please.
I've got an LG 60PK790 tv which has lost its picture and sound. When you turn the tv on everything acts as normal, the red standby light turns to blue, the screen flickers 'very dim' but looks like it's about to come on but that's it! If you press any button on the remote the blue led light responds as normal. If you turn all the lights off you can see the screen very dimly lit.
So far I've, replaced the 3 main resistors R927, R928 and R929 on the power board which is an EAX61300501. I did this before checking the voltages 'trying to be clever'??
After this obviously didn't work I checked all the vs and va voltages which were all correct and to spec, 202va and 60vs and the others 5v, the old resistors were fine measuring 10.6 .
So next I unhooked the xsus, checked it for shorts but couldn't find anything obvious, the problem was still apparent with the xsus was unplugged. After this I unplugged the buffer boards, removing the top left the dim screen lit on the bottom and vice versa, so obviously not them. I then checked the ysus for shorts and couldn't find anything obvious but because I found a board for only£20 , which came out of a known working tv, I grabbed it and fitted it and, yep, nothing!
Before I allow anymore money into the tv I'd just like to get other folks opinions.
The tv went like this one day for no apparent reason, and the tv has not been dropped and shows no signs of damage when partially lit.
Any help would be appreciated.
I've got an LG 60PK790 tv which has lost its picture and sound. When you turn the tv on everything acts as normal, the red standby light turns to blue, the screen flickers 'very dim' but looks like it's about to come on but that's it! If you press any button on the remote the blue led light responds as normal. If you turn all the lights off you can see the screen very dimly lit.
So far I've, replaced the 3 main resistors R927, R928 and R929 on the power board which is an EAX61300501. I did this before checking the voltages 'trying to be clever'??
After this obviously didn't work I checked all the vs and va voltages which were all correct and to spec, 202va and 60vs and the others 5v, the old resistors were fine measuring 10.6 .
So next I unhooked the xsus, checked it for shorts but couldn't find anything obvious, the problem was still apparent with the xsus was unplugged. After this I unplugged the buffer boards, removing the top left the dim screen lit on the bottom and vice versa, so obviously not them. I then checked the ysus for shorts and couldn't find anything obvious but because I found a board for only£20 , which came out of a known working tv, I grabbed it and fitted it and, yep, nothing!
Before I allow anymore money into the tv I'd just like to get other folks opinions.
The tv went like this one day for no apparent reason, and the tv has not been dropped and shows no signs of damage when partially lit.
Any help would be appreciated.
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