PDA

View Full Version : TV gurus...am I screwed?

herta28
10-05-2008, 01:50 AM
I've got a Samsung HC-P4752W rear projection HDTV. A little over 3 years old. Just out of the blue, it started doing this....

http://img.photobucket.com/albums/v156/herta28/tvpicture.jpg

Notice the ghosting along the top and bottom. The problem occurs no matter what is connected to it (dvd, cable, x-box), so I'm pretty sure its the tv. I fail miserably when it comes to the inner workings of the television, so does anyone know what this problem is? Is it time to go out and get a new flat screen?
Hemps
10-05-2008, 02:28 AM
One out of 3 tubes is gone/going. fix vs new I'm not sure of the difference in price.

only my 2 cents, could be totaly wrong.
Charlutz
10-05-2008, 06:42 AM
Is that a tube going or a convergence issue? I have a big CRT RP set too. What sucks about them is you basically need a house call which will cost you $50-100 just to get an estimate. Unless you can throw it in a truck and bring it to the shop. My Hitachi has a couple of menu items that allows it to refocus things. Doubt it would work for anything major, but you might give it try.
Hemps
10-05-2008, 09:57 AM
Is that a tube going or a convergence issue? I have a big CRT RP set too. What sucks about them is you basically need a house call which will cost you $50-100 just to get an estimate. Unless you can throw it in a truck and bring it to the shop. My Hitachi has a couple of menu items that allows it to refocus things. Doubt it would work for anything major, but you might give it try.


Yeah The convergence chip not the tube. Rather drunk post last night lol:D
SVTF
10-05-2008, 04:44 PM
Not to Hijack the thread ... but I have a question.

I have a 50 inch Toshiba rear projection and you can see in one part of the screen a yellowish blob/circle you can only notice it when you have something on TV that has white in the background.

I was thinking a burn in of some sort but not sure?
ebrown
10-06-2008, 11:14 AM
I've got a 60" Pioneer tv doing the very same thing. I went into the menu setting to adjust the convergence, but I couldn't get it set right to fix it. I'm having the same quandry, do I fix it or spend the money on a new one. Does anyone know for sure if this is a bulb thing or does the convergence part of the tv have different components toi fix it? Anyway, just curious as well...............if I can fix it for $200 - $300 bucks I would choose to do it.
Hemps
10-06-2008, 11:45 AM
My friend had that same kind of picture problem as the one posted. It was infact the convergence chip (blue one on his I think) I believe it was around 100 or so to fix it. But it happened again 4 months later and he just got a new tv (54 lcd to be exact)

p.s. just played madden 09 on ps3 on buddies 58" plasma. SWEEEEET!
bigslickwood
10-06-2008, 03:53 PM
As others said, looks like a convergence issue. Some sets have a menu item for adjusting with a grid that you align. Could also be a soldering problem, not necessarily a bad chip. If you can find it and look at it, might be an easy fix.

SVTF, a yellowish blob on an all white screen could be caused by dust or something on the blue tube. Red + green make yellow. Add blue to get white. If you could put up a blue screen, do you see a darker spot in the same area?
SVTF
10-06-2008, 04:22 PM
SVTF, a yellowish blob on an all white screen could be caused by dust or something on the blue tube. Red + green make yellow. Add blue to get white. If you could put up a blue screen, do you see a darker spot in the same area?

Interesting, never thought of that - TV is 6 + years old.

Can I get access to the tubes from the back panel? And then just dust them off? the blob/spot is to left side of screen.

The last time I had a repair done it did not look like it but then again I did not have my hands in there.
herta28
10-06-2008, 04:28 PM
Thanks for the help everyone!
bigslickwood
10-06-2008, 05:09 PM
Interesting, never thought of that - TV is 6 + years old.

Can I get access to the tubes from the back panel? And then just dust them off? the blob/spot is to left side of screen.

The last time I had a repair done it did not look like it but then again I did not have my hands in there.

Usually, yes. There might be a secondary cover you have to move out of the way. I recently had to make a repair on mine (had to replace some capacitors that are notorious for going bad on Mitsubishi TVs), and while I was in there, I cleaned the dust and gunk off the lenses. Amazing how much brighter and vibrant the picture was again.
SVTF
10-07-2008, 06:16 AM
Usually, yes. There might be a secondary cover you have to move out of the way. I recently had to make a repair on mine (had to replace some capacitors that are notorious for going bad on Mitsubishi TVs), and while I was in there, I cleaned the dust and gunk off the lenses. Amazing how much brighter and vibrant the picture was again.

Thanks will have to look into that.

Sorry for the little hijack.