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TV locking up
This thread has 6 replies. Displaying all posts.
Post 1 made on Saturday January 12, 2019 at 15:00
Long Time Member
May 2011
We have a take-over job we're working on and they have a Samsung TV that keeps locking up (it's locking up every 2-3 days and won't turn on/off until it is power-cycled). Any thoughts aside from loose cables, firmware update, just a bad TV, etc. I'm wondering if power variances might cause this issue? Unfortunately it is inside a custom box with a lift so I wasn't easily able to try plugging it into another outlet with an extension cord to see if this might fix the problem.

Any of you guys that are more experienced in AC think that power variances might cause this issue? They had a flood and the area was rebuilt. I have no idea what the electricians may have done on the power side.

Thanks in advance
Post 2 made on Saturday January 12, 2019 at 15:11
Mac Burks (39)
Elite Member
May 2007
My LG Plasma locks up every time it rains. I have been meaning to install surge protection and possibly a UPS.
Avid Stamp Collector - I really love 39 Cent Stamps
Post 3 made on Saturday January 12, 2019 at 15:31
Rob Grabon
Founding Member
November 2001
Lift motors put out lots of AC noise, maybe they can leave it up for a few days to see if it behaves.
Technology is cheap, Time is expensive.
Post 4 made on Saturday January 12, 2019 at 17:50
Brad Humphrey
Select Member
February 2004
Since the area had been flooded, I would not expect the electrician to have done his due diligence and replaced every connection point that could have been compromised.

Low voltage (brown out) is a common symptom to locked up processors. So take your DMM and measure the voltage on the AC plug the TV is plugged into. Then do my little trick of plugging your Shop Vac into the outlet and measure the voltage again when it is on (load test).
If your voltage drops below 108VAC, you have a problem somewhere in the electrical. Also if you start out at a voltage like 125VAC and under load it drops to 110VAC - then you still have a major issue. 15 volt drop is excessive.

Another thought, since there is a lift involved as Rob mentioned. Measure the voltage & current when that is operating. A lift motor that is binding could draw an excessive amount of current, causing a big voltage drop affecting the TV.
Post 5 made on Monday January 14, 2019 at 07:18
Active Member
January 2005
Last one I had issues with I had to factory reset.
Post 6 made on Monday January 14, 2019 at 10:14
RC Moderator
October 2002
Of course power variations and surges can lock up an electronic device. How old is the install? What kind of Lift? are you using a surge at all?
I'm no engineer, but I did stay at a Motel 6 last night!
Post 7 made on Monday January 14, 2019 at 12:49
Super Member
May 2003
As a test you could insert a UPS or Power Conditioner that incorporates voltage correction.

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