My Hitachi Keeps Turning Off When i turn it on its turns right back off and i keep trying to turn it on but it just - Hitachi 53UWX10B 53' Rear Projection question. My nokia n95 keeps turning itself off. Hitachi smart tv keeps turning hitachi tv troubleshooting. Hitachi tv operators manual.
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post #1 of 3Old09-29-2013, 10:36 AM - Thread Starter
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I just picked up a Hitachi P50S602. When I hit the power button, it powers on (red power indicator light turns blue), displays static/snow for a few seconds and then turns itself off. When it turns off the blue power indicator light blinks five times and repeats. The insides look good, i.e. fuses, capacitors, resistors, etc.
Vs & Va voltages on the PSU and XSUS boards seem right. Removing either or both Y-Buffers just stops the brief display of static then TV still powers off. Removing the power cable from XSUS to YSUS will not make it stay powered on.
It seems like a power supply problem, but the voltages go up to their proper values before the TV powers itself off. However, if the PSU can't sustain those voltages, perhaps, that is the cause of the powering off, idk.
I haven't been able to find other similar problems, yet, on the web. Thanks in advance to any who happen to consider this issue.
Vs & Va voltages on the PSU and XSUS boards seem right. Removing either or both Y-Buffers just stops the brief display of static then TV still powers off. Removing the power cable from XSUS to YSUS will not make it stay powered on.
It seems like a power supply problem, but the voltages go up to their proper values before the TV powers itself off. However, if the PSU can't sustain those voltages, perhaps, that is the cause of the powering off, idk.
I haven't been able to find other similar problems, yet, on the web. Thanks in advance to any who happen to consider this issue.
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Could also be one any of the boards connected to power supply causing a PSU shut down
easiest way is disconnect/reconnect boards turn on set until you find the offending board that shuts down the TV. looks like you have looked into that in part.
You may have a power supply board fault a common easily repairable failure is the electrolytic capacitors
You May be able to replace the board or repair the one you have. google and look at ebey for
'Your TV brand /model # power supply
'Shopjimmy.com sells used ,new salvage and reconditioned boards
Google Your 'set name /model number' and capacitor kit
for more info also.
Operation or power supply failure *may include other parts or boards in addition to capacitors .
I fixed one of my sets a Dynex for $4.00 worth of capacitors . Old capacitors had bulging tops soldered in some new ones on the power supply board ,works like new
mfr support site may have a parts store or referral . MFr might be quite a bit more than the other sources like ebay or shopjimmy.com. some times you can even find new boards on Ebay .
All you need are screwdriver and maybe a nut driver to replace boards .
If you google the part number on the power supply circuit board or the TV brand model + power supply board you will likley find plenty of info best to order the board by the part number on the board itself .
The power supply board is the one where the wall cord is attached.
If you decide to replace the board order by the actual number on the board itself they can vary within a sets model run
See this thread for more details
https://www.avsforum.com/t/1491809/most-common-lcd-led-plasma-tv-repair
Don't forget a thumbs up if this has been helpful for you!
easiest way is disconnect/reconnect boards turn on set until you find the offending board that shuts down the TV. looks like you have looked into that in part.
You may have a power supply board fault a common easily repairable failure is the electrolytic capacitors
You May be able to replace the board or repair the one you have. google and look at ebey for
'Your TV brand /model # power supply
'Shopjimmy.com sells used ,new salvage and reconditioned boards
Google Your 'set name /model number' and capacitor kit
for more info also.
Operation or power supply failure *may include other parts or boards in addition to capacitors .
I fixed one of my sets a Dynex for $4.00 worth of capacitors . Old capacitors had bulging tops soldered in some new ones on the power supply board ,works like new
mfr support site may have a parts store or referral . MFr might be quite a bit more than the other sources like ebay or shopjimmy.com. some times you can even find new boards on Ebay .
All you need are screwdriver and maybe a nut driver to replace boards .
If you google the part number on the power supply circuit board or the TV brand model + power supply board you will likley find plenty of info best to order the board by the part number on the board itself .
The power supply board is the one where the wall cord is attached.
If you decide to replace the board order by the actual number on the board itself they can vary within a sets model run
See this thread for more details
https://www.avsforum.com/t/1491809/most-common-lcd-led-plasma-tv-repair
Don't forget a thumbs up if this has been helpful for you!
post #3 of 3Old10-01-2013, 12:39 PM - Thread Starter
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Thanks, but I still can't isolate the failure. These TVs are apparently very difficult to troubleshoot. I'm beginning to think it's a lost cause which is very frustrating since the screen turns on for a few seconds. Nobody on the internet seems to know how to troubleshoot Hitachis
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