UN55H6350AF wonder if anyone has had similar issue, set comes on for about 12 seconds then goes off for 2 seconds, then all 3 lights go blue on tcon set lights up blinks one time then dims just a little, stays on for 12 seconds off for 2 seconds, all 3 tcon lights go blue set lights up blinks once then dims a bit over and over. Unplugged cable and verified powerboard and backlights, thinking it's a voltage problem on mainboard. Camera is down, borrowing pictures from ifhlaw, same tv: https://www.badcaps.net/forum/showth...ight=un55h6350
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UN55H6350AF cycling on for 12 seconds off for 2
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Re: UN55H6350AF cycling on for 12 seconds off for 2
Trying to jog my bad memory, no bl on signal from mainboard, is it solder jumper from bl on to standby pin or should I use a resistor? not sure which one is standby, is it pin 2- UD? or can I solder the jumper/resistor from bl on to another standby point on the board? unplugged bl on wire, now it goes on for 12 seconds off for 2 THEN which is different, backlights light up then 3 blue lights come on tcon but no blink and no slight dim and repeats this over and over so backlights come on for 12 seconds-go off for 2 seconds-backlights come on-3 blue lights light on tcon-back lights go off after 12 seconds etc etc.Last edited by nomoresonys; 10-04-2020, 11:04 PM.
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Re: UN55H6350AF cycling on for 12 seconds off for 2
I think it's the shitty software gets corrupt, if so need to reprogram the eeprom/spi/nand or freeze the shit out of it long enough to update thru usb. I did the hours of detective work figuring it out, I don't get paid here so nobody else should either, if anyone feels a need...PLEASE donate to childhood cancer or any other worthy cause.
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Re: UN55H6350AF cycling on for 12 seconds off for 2
Not exactly sure now, after looking at manual, good job diff, https://manualzz.com/doc/2986174/ser...nd-accessories page 30, here's what I got, I'll just report the ones that seem off. L204 LOWER A5V_PW is reading 1.58v looks like it should read 5v:
B3.3V_PW LOWER L203 reads 3.41v on one side only.
A1.5V_DDR_PW UPPER LEFT L2001 reads 5v. Anyone think this could be a hardware issue instead of a firmware issue? Thanks.Last edited by nomoresonys; 10-07-2020, 02:37 PM.
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Re: UN55H6350AF cycling on for 12 seconds off for 2
Thanks Diah, It will not go into off state, it comes on as soon as I plug it into mains, I managed to get to service menu, wasn't easy but it goes away when the 2 seconds off hits, can you tell if it's a hardware component issue, from page 30 of the manual and the off readings from those three components in post #7? I'll try to post a screenshot of the picture, I know these mainboards can be a real pain to diagnose, the manual says replace mainboard, do you think a firmware issue would make those components read off like that? THANKS for helping with this puzzle, I appreciate it.Last edited by nomoresonys; 10-08-2020, 05:52 AM.
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Re: UN55H6350AF cycling on for 12 seconds off for 2
Originally posted by nomoresonys View Postdo you think a firmware issue would make those components read off like that? THANKS for helping with this puzzle, I appreciate it.
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Re: UN55H6350AF cycling on for 12 seconds off for 2
Originally posted by nomoresonys View PostWill it update with lvds cable unplugged?
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Re: UN55H6350AF cycling on for 12 seconds off for 2
Originally posted by nomoresonys View PostIt will not go to off state, you think I should unplug lvds while it's on?
to maybe get into off state?
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Re: UN55H6350AF cycling on for 12 seconds off for 2
For what it's worth my UN55KS800DXFZA is running exactly like this, 12 seconds off then on for a second or so and repeat. I'm heading into town now for some freeze spray, thermal adhesive for the heat sink that came off as soon I popped the plastic rivets with springs, and power board connectors to make a cable where I can access the tiny holes for measuring.
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