Author Topic: Anyone know anything about older big screen TV's? (Read 252 times)

JB73 · « **on:** February 27, 2008, 06:54:45 PM »

I got a Toshiba 52" for free from a close friend who just needed it out of the house, they got a flat panel...

it's about 7 years old maybe.

anyway last night it started shutting off and on, then off for good.

Today plugging it it you hear some type of relay or breaker switching on and off, sometimes 3 sometimes 5 times, this happens every time you unplug it, then plug it back in.

anyone got an idea what it may be, and if it is possible to fix it? the sound comes from the lower right where the power cord enters the back console.

if you don't know yourself, do you know a forum online with people that may know?

thanks

Maverick · « **Reply #1 on:** February 27, 2008, 07:25:01 PM »

If there is a TV repair shop in your town you might want to ask them. Most that I have visited are willing to talk over the issue and at least give you an idea if a repair is economically feasible.

Airscrew · « **Reply #2 on:** February 27, 2008, 10:29:05 PM »

I had a similar problem with an old Zenith 27" about 4 years ago. TV wouldnt shut off, then finally if you pushed the power button often enough it would turn off but then it was hard to turn back on. If you unplugged the TV you could hear something clicking inside.

I asked a repair shop over the phone what could it be, it was suggested (and its been awhile so I dont remember specifically all the details) there is a controler card for the power to the TV and sometimes they go bad. It was supposed to be about $150 for the card. ( 4 years ago) The TV was about 12 years old, I got a new TV.

Hawker25 · « **Reply #3 on:** February 27, 2008, 10:35:16 PM »

as somebody said i think you should try to find a local repair shop that might know something and could give you an idea what is wrong. Models vary and it could be something minor or a major failure. I had the exact same problem with a magnavox few years back and it turned out to be a .30 resistor that had gone bad.

rpm · « **Reply #4 on:** February 27, 2008, 10:43:42 PM »

Sounds like a power supply issue. Not uncommon for projection sets. Call the repair guy and break out the checkbook. Replacing the module in my RCA 65" cost over $700.

Jenks · « **Reply #5 on:** February 27, 2008, 10:54:41 PM »

assumming this is a rear projection 3 tube unit, prolly a problem in the deflection circuits, sounds like a hi voltage shut down problem. In other words the xray protect circuit is kicking in because it senses a problem in the horizontal(very hi voltage) or vertical(hi voltage) deflection circuits. Either way most shops don't troubleshoot down to the component level anymore. If the deflection board is available they will usually just replace that and charge you around $400.00 to $600.0 to fix. at least around here they do( fairly rural so. oregon.) In a bigger city I don't know. It of course could be some other prob. but experience tells me most likely is in deflection circuits, thats were all the voltage is so thats where all the heat is and where things tend to die. Hope this info helps you when dealing with your local shop. Certainly check with them and see what the charge to diagnose.

Jenksie

mora · « **Reply #6 on:** February 28, 2008, 08:05:02 AM »

Quote

Originally posted by rpm
Sounds like a power supply issue. Not uncommon for projection sets. Call the repair guy and break out the checkbook. Replacing the module in my RCA 65" cost over $700.

Power supply issue indeed, but not necessarily expensive. Probably a broken transistor(s) and possibly some broken resistors that might have caused the transistor failure.

Thruster · « **Reply #7 on:** February 28, 2008, 08:34:53 AM »

Had similar symptoms, was the transformer. Guys came out, pulled the chassis and three days later brought it back good as new. $300.00

JB73 · « **Reply #8 on:** February 28, 2008, 09:32:13 AM »

well thanks all, looks like it's going to the dumpster if it continues.

$300-$600 to fix a standard definition old projection TV.... I don't think so. the only reason I have it was the price, free. I did spend $60 on a uhaul to get it to my place since it was too tall to fit in a regular cargo van I had access to. that $60 was a stretch for my budget sadly

Jackal1 · « **Reply #9 on:** February 28, 2008, 09:41:17 AM »

Quote

Originally posted by rpm
Sounds like a power supply issue. Not uncommon for projection sets. Call the repair guy and break out the checkbook. Replacing the module in my RCA 65" cost over $700.

Holy Moly! Jesse James at least had the common courtesy to use a gun.

I wanted to use R. Lee Ermey`s line about common courtesy.......but........... ..