Re: sharp lc46sb54u Troubleshoot.
80 dollars on ebay! luckily it worked. wasn't too bad. i only paid 50 for the tv.
kkswim2616
Member
Last Activity: 04-15-2015, 05:45 PM
Joined: 10-15-2013
Location: PA
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Re: sharp lc46sb54u Troubleshoot.
took a shot and replaced main board and it was successful. thanks!Leave a comment:
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Re: sharp lc46sb54u Troubleshoot.
bumpLeave a comment:
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Re: sharp lc46sb54u Troubleshoot.
How would I go about finding out why i have nothing at pnl_pwr. There is a noise coming from the main board under the main cpu in the middle. is there anything I can jump to pnl_pwr.
Also the inverter board is receiving the necessary voltages from plug coming from the power supply, but the plug coming from the mainboard shows no voltages whatsoever.Leave a comment:
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Re: sharp lc46sb54u Troubleshoot.
SO my multimeter was definitely shot. readings are quite different on a different multimeter.
PSON- 3v
ac_det- 3 v
pnl_pwr- 0v
sgnd- 0v
bus5v- 4.9v
sgnd- 0v
sgnd-0v
ur15v- 15v
ur15v- 15vLeave a comment:
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Re: sharp lc46sb54u Troubleshoot.
The only way i was able to get any reading besides zero was setting it to DC, 200m Volts for the power board to main board plug.
for the ac supply I had it set to AC 200m Volts as well as thats the only setting I could get actual numbers. Maybe the batteries in it are bad. ill pick up some new ones and try again.
Thanks
Leave a comment:
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Re: sharp lc46sb54u Troubleshoot.
the small cylinder fuse on the small power board is only reading 195 V it should be 240V. would that have anything to do with it?Leave a comment:
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Re: sharp lc46sb54u Troubleshoot.
with the tv forced on.
Power Board to Main Board Voltages
PSON- 1.3v
acDET-1.5v
PNL- 0v
bus5v- 3.0V
UR15v- 9.8v
UR15v- 8.9VLeave a comment:
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Re: sharp lc46sb54u Troubleshoot.
Power Board
[url]https://drive.google.com/file/d/0B1LT4rexgos7cXpTd1QxNjAxQ1U/view?usp=sharing[/url]
[url]https://drive.google.com/file/d/0B1LT4rexgos7aUpfRllCeGw0QlU/view?usp=sharing[/url]
[url]https://drive.google.com/file/d/0B1LT4rexgos7QlV0clNuWmFMT3c/view?usp=sharing[/url]
[url]https://drive.google.com/file/d/0B1LT4rexgos7ZW01WGg4YWRfRHc/view?usp=sharing[/url]
[url]https://drive.google.com/file/d/0B1LT4rexgos7OFBVMjVSMWJpRWc/view?usp=sharing[/url]
Main Board
...Leave a comment:
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Re: sharp lc46sb54u Troubleshoot.
it'll be nearly impossible to the get whole board with legible writing. so ill start with the power board and upload those pics.Leave a comment:
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Re: sharp lc46sb54u Troubleshoot.
[url]https://drive.google.com/file/d/0B1LT4rexgos7aFpoMnNhR0NGVVU/view?usp=sharing[/url]
[url]https://drive.google.com/file/d/0B1LT4rexgos7SHN5ZUJvS08yX0E/view?usp=sharing[/url]
Heres pictures of the boards. sorry the attachment things would still not work.Re: sharp lc46sb54u Troubleshoot.<br...Heres picturesLeave a comment:
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sharp lc46sb54u Troubleshoot.
Hello!
I recently acquired this sharp lc46sb54u for little to nothing so I figured I would take it in and attempt to fix it. I am attempting to trouble shoot it and find myself lost. I replaced the power board as I originally thought it was that. I am left with the same issue as first started.
Upon pressing power there is an audible click, no picture or audio. The power and opc light blink twice together, then the opc blinks once by itself. I can force the tv on by using channel down volume up and power but i am left with no picture or audio again, just a steady green... -
Re: New Members - please post your introductions here
Hello!
I came to this forum to seek some knowledge on an issue regarding a tv I am in the middle of trying to fix. I am very handy when it comes to tearing apart a car, but electronics is a whole different language to me!
Hoping I can get some help and in return help people with anything I can!!
KenLeave a comment:
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