Question about Sanyo HT32744 32" TV
Screen turns green after on for a while; then i give it a good whallop and everything works normal again. no more green screen. i am an elec. eng. and can probably fix this . how hard is it to access the crt board? does the back come off or does it pull out from the front? do I have to discharge the high voltage section for safety's sake? Thanks for your help. Pete
I too had the same problem where my HT30744 TV would lose its color. My mom's HT32744 would have the same problem too. They both are refurbished models bought at Value City Dept store. If I gave the cabinet a good hit it would mostly fix the color, but it could also make the picture go fuzzy too, a clear sign of just a loose connection somewhere.
So after my wife telling me she was sick of this almost 2 year problem and she was going to buy a new TV on the weekend, I figured I had nothing to lose. So I took the rear cabinet off, unseated the card mounted on the picture tube, applied a little dielectric grease on the connector on the card and reseated the card, removed, re-greased and reattached the card. I have had no problem with either my or mom's which I did the same to since! This is an easy fix that anyone can do. The hardest part is moving the TV and reassembling the rear cabinet. Do not pull the cabinet back out more than you have to, to ease the reassembly of it.
Posted on Mar 05, 2010
After reviewing the info with the same tv sitting in front of me.
seems to be a connector problem in the video board that is connected to the crt. the connector between the video board and the signal board. remove this board, inspect the board and spray and clean the connectors. also try to ruffin up the contacts if possible. also resolder connectors, and check crt board for cracks. this is a known problem with these.
please report back if this helps you.
Posted on Apr 10, 2008
The back of the set slides right off once you remove the screws and the CRT board is attached to the end of the picture tube, easily accessable. You do not have to discharge the high voltage. Look closely at the solder joints on the CRT board and you will probably find one or more cracked loose.
Posted on Apr 01, 2008
My set had the same problem; the picture went red, dark, and splotchy. When I hit the side, the problem went away but soon came back. Thinking that it might just be a loose connection, I took off the back. (A much easier task than lifting it off the shelf.)
The little board on the back of the CRT seemed to have come loose. When I pushed on it, it moved and clicked lightly back into place. I turned on the set and the color was back. I left the set on for 48 hours and the color remained perfect. The problem seems to be solved.
When I replaced the set on a shelf, I set it on a heavy duty but simple "lazy Susan" that I built to go under it. It makes connecting cords MUCH easier, and if I have to take the back off again, I will not have to take the set off the shelf.
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Posted on Jan 02, 2017
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