Re: LG 79UB9800 heat problem
there’s a cellular antenna nearby, but I think the TV just needs better grounding, since there are no grounding plans in the building’s electricity layout.
sushi1
Member
Last Activity: Today, 05:10 AM
Joined: 08-30-2017
Location: Cairo
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Last edited by sushi1; 10-21-2017, 05:35 AM. -
Re: LG 79UB9800 heat problem
Should I be concerned? let the tech change the condenser? anyways I've attached the power supply pic. , if it doesn't have resistors or maybe anything odd that can be seen (I know that's unlikely)....Leave a comment:
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Re: LG 79UB9800 heat problem
well it has been unplugged for nearly 30 mins now and can still feel the static, and nothing is touching it or plugged in it.Last edited by sushi1; 10-20-2017, 07:21 AM.Leave a comment:
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Re: LG 79UB9800 heat problem
Will see what I can do, will definitely bring a tech soon.
Last question:
I can also feel static electricity running though the TV metal frame when I touch it even if it’s unplugged and nowhere near other devices, it’s on a wooden cabinet.
does this indicate voltage leak or is it normal?Leave a comment:
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Re: LG 79UB9800 heat problem
Not willing to take it off again, plus I am not much a tech. to check for bad caps and soldering stuff..
I have another thread and you suggested switching the mainboard, it worked and I thank you for that. In the mean time i’ll just hope it doesn’t go bad.
If you visited Egypt, come and take a look at it yourself (kidding)
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Re: LG 79UB9800 heat problem
yeah don’t know whether it’s a mainboard fault, psu or poor ventilation and design, What I do know for sure is that LG is trash.Leave a comment:
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Re: LG 79UB9800 heat problem
the worst TV i’ve ever dealt with, so frustrating not being able to figure it out... no more LG products for me.Leave a comment:
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Re: LG 79UB9800 heat problem
Just checked and nope they’re on seperate breakers and plugs.Leave a comment:
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Re: LG 79UB9800 heat problem
the tv is working great and I always make sure the room temp is good, plus there’s an AC right above the TV, but AC or not, it still gets considerably hot, so I don’t really think installing fans would help much.
I was wondering if voltages can do that?
and whether lowering the input voltage (within supported range) would help.Leave a comment:
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LG 79UB9800 heat problem
Hello,
My TV is generating excessive amount of heat from the back (especially around the main board and psu areas) even after operating for just a few minutes.
I recently switched the main board due to video problems (maybe from the heat??) and I am really worried the new main board might eventually get the same problems.
tried connecting it to a surge protector as well as directly to the wall, nothing helps.
The TV supports 100-240v, and I run it on 220v.
Shall I try connecting it to some sort of a stabilizer that outputs 110v?
if that’s... -
Re: LG 79UB980T Video problem
okay, popped in a new main board and the TV worked fine..
thanks for your help
What I am really concerned about is if the new main board will adapt well to 220v power instead of 110v? since I bought it from the US while I’m in a different region.
It’s the exact same board no. but was taken from a TV that was working under 110v
thanksLast edited by sushi1; 10-14-2017, 07:54 PM.Leave a comment:
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Re: LG 79UB980T Video problem
How about an EEPROM reset?Leave a comment:
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Re: LG 79UB980T Video problem
* the TV works fine after leaving it turned off for a couple of days.
* it will continue to work flawlessly ONLY if I left it switched ON (can leave it 10 hrs no problem)
* if I switched it OFF even for 1 sec. and turn it back ON the issue comes back and I have to wait another couple days for it to work again.
I am still waiting for a new mainboard to arrive but in the mean time,
I am really intrigued what would cause this mind bending issue.
*I know Bad BGA soldering is the main suspect here,
but...Last edited by sushi1; 09-21-2017, 01:18 PM.Leave a comment:
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Re: LG 79UB980T Video problem
I doubt that's the culprit since menus are clearly visible, but will look it up just in case.Leave a comment:
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Re: LG 79UB980T Video problem
It worked again after leaving it turned off for nearly a week.. this time without changing places, weird right?
Im currently waiting for a new main board to be delivered, but i'm lost here.
Why does it work after being turned off for a few days? bad soldering? bad PSU? corrupted software?Leave a comment:
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Re: LG 79UB980T Video problem
I found several main boards online that exactly match the one that needs replacement, same board model no. but not taken from the same TV size as mine. they're either taken from 65" or 84" models while mine is 79"
(does the TV size matter?)
I need someone to point me in the right direction for selecting a compatible board.
mine is EAX65608604(1.1)
took a couple of pics of the board...Last edited by sushi1; 08-31-2017, 08:42 PM.Leave a comment:
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Re: LG 55UF6450 Static on screen but has sound and on screen menus work.
What about the tv apps? like youtube or netflix? same static screen?Leave a comment:
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Re: LG 79UB980T Video problem
I am not attempting to repair it myself, I just want diagnosis because I am in a country where technicians cannot be trusted.Leave a comment:
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Re: Sony KDL70R550A dark area
Okay thanks, will take a look. anything else I should be looking for?Leave a comment:
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Re: LG 79UB980T Video problem
Exactly what I had in mind, So that's a Main board issue, not T-Con?Leave a comment:
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