TV Turns Off On Its Own

[ElkinFencer10]

So this might be a more common thing than I realized, but one of my CRTs keeps turning itself off in the middle of a game. It's an Advent HD CRT. At first, I thought it was just IR noise from the remote, so I took out the batteries, and that did make it happen less frequently, but it's still doing it every now and then. Anyone have an idea why?

[Stark]

Some types of CRTs have an overheating mechanism built into them and will shut down if that is triggered. It would make it seem sporadic too, depending on what environmental thing made it shut down. What make and model of CRT do you have?

[ElkinFencer10]

Advent HT2751A. Circa 08/2003

[Stark]

A search shows me a sordid history of sad stories with that TV.

Yeah I bet it's overheating in some way. Maybe dust build-up somewhere? Or some heatsinks that need to be cleaned? Please be very, very careful doing anything with CRT TVs, they store power even when unplugged and can discharge in a deadly way.

[ElkinFencer10]

If I electrocute myself, my collection gets auctioned off and the money goes to support the site.

[Stark]

Oh ok, well do whatever then.

(j/k, please be careful!)

[CRTGAMER]

Advent HT2751A. Circa 08/2003

If your Advent Tube TV is built like the Sony WEGA HD CRTS of the same era then likely the power detection chips going bad. A slim chance your PCB might have the same factory installed defective chips. The dusting out of the interior a good start, tap all the buttons on the TV after unplugging. Keep clear of the Flyback Transformer and associated fat wire going to the Tube.

I posted this Guide back in August 2011, my HD 4:3 CRT TV still going strong.

Sony RLOD Twenty Dollar Repair Guide
http://www.racketboy.com/forum/viewtopic.php?p=458437#p458437

Searching online alludes to a similar problem, though I have doubts in believing an uncertified sales associate. If you do pop the cover, I am curious if yours has the same chips as outlined in my Repair Guide. Though the TV is not top of the line, 4:3 HD CRTs are very uncommon, might be worth the trouble to repair if not too expensive.

https://www.seebs.net/log/articles/175/cheap-tv-redux-advent-turns-out-to-be-a-zombie

As I mentioned previously, my Advent TV sucks. A month or two out of warranty, it lost the ability to power on. This behavior has been noted by other people. I took it in for service, based on the suggestion from the Advent people that it wouldn’t be very expensive.

The Best Buy folks want $150 to fix it. It was only a $200 TV to begin with.

The problem is that the TV partially powers on the instant it’s plugged in, but that any button touched causes it to turn off again. According to the Best Buy people, this involves a failed EEPROM, which must be replaced with a freshly-programmed one. They can’t suggest anything to keep the TV from frying another EEPROM; I’m better off spending a little more on a new TV than I am trying to recover this one.

[Exhuminator]

If I electrocute myself, my collection gets auctioned off and the money goes to support the site.

Elkin, do not muck about in the guts of a CRT TV.

For now, try covering the infrared receiving port of your TV with a piece of cardboard and tape. See if the TV's bad behavior continues after that.

[Sarge]

I agree with Exhuminator. Unless you're very used to messing around in CRT TVs, you can very much hurt or kill yourself on some of the components. Not worth it.

[ElkinFencer10]

Challenge accepted