Question about Daewoo DSJ-4710CRA 47" Rear Projection HDTV-Ready Television

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Power green lite wont stay on but 4-5 seconds

I had a friend bring by a Daewoo 47" projecion TV whic he said had a severe 'trapezoidal' problem (screen width OK at top & ottom but about 2-3 inches narrower in middle... By the time unit had ben loaded in pickup, driven 3 miles over here & unloaded, after they left I connected cable and A/V inputs, fired it up and that problem was gone! (maybe bad connection/cold solder joint,etc that fixed itself with the move). anyway I did use front panel menu to set convergence, sharpness & conrast to get a really good picture outta it. I ran it for 8 hrs x 2 days in a row for burn in and it still looked fine... Finally, just before calling him to come get it back (at no charge since I only spent an hour on it) I decided to finish up by doing a regular PM (preventative maint) and opened the back lower cabinet, carefully vac'ed out the dust/dirt on circuit boards/components/wires, etc and (here was probably my mistake)then CAREFULLY disconnected 1 at a time then reconnected each of the inter-board wiring connectors We live in FL and so the high humidity, salt & sand can cause corrosion at the connection point and my hope was that this action would 'clean-up' any bad areas and make the connections solid (low inpedence) for longer than not doing it... Next time I turned it on (and ever since!) I get red standby LED, then when push small power button I get green (on) LED and can hear relay click and the beginning ov the high voltage to the guns coming up BUT it goes back to red (standby) in 3-4 secs no matter which other buttons are pressed (Cable, Menu, Volume, etc while its green Anybody worked on 1 of these or seen anything like it? I cant find anyone locally who is willing to service these and really hate to send it back to frien in WORSE shap than when I got it to try to fix a different problem (kinda ruins your rep as a good electrical engineer!) Also tho I have downloaded both user and service manuals I lost my Tektronics 475 scope a few years back and havent needed it often enought to worry bout getting any kind of replacement osciloscope... Can any one help?? thanx! --George-- BSEE Ga Tech 1978 ges1130@juno.com

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Update: Talked with customer services and was that after a TV is discontinued, They no longer make parts for it. So the only inventory is what was in stock at that time. Asked about maybe some sort of a discount on buying a new TV from them, No luck. So so far it looks like any one with this problem is just out of luck. I will be writing the Better Business Bureau to report this. I thought a company had to stock repair parts for seven years after line was discontinued. Maybe a class action suit is in order if enough people have this same problem. If anyone has heard any different please let people know. I for one will never buy or recomend this company for anything after this expensive lesson .

Posted on Nov 29, 2008

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Have same problem. This is an e-mail sent to Daewoo. We purchased a DSJ-4710CRA/5510CRA TV about two years ago from BJ'S wholesale club. TV has been fine until about a month ago. Turned TV on and it shut down after a minute.Called local TV repair people and they came out . First call they suspected the High Voltage generator. That trip was $102.55.They ordered the part from Daewoo. Part came in and was installed. TV still did not work. That call was $115.56. They took unit to their shop for further testing. Found the Deflection board was bad. Call Daewoo to order and was told part is not available. Tried a board rebuilder and no luck. This TV was built in 2004 and purchased in 2006. How am I to justify any more purchases from Daewoo that can't be repaired after two years of use. I work for a large copier manufacturer that if you purchased a copier that had to be replaced after two years I would probably never see you as a cutomer again. I'm attaching the service tickets for credibility. I would appreciate any help with this matter. Will follow up if I hear anything about this problem.

Posted on Nov 09, 2008

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There is a relay on the circuit board that the power cord connects remove the screw that holds the board to the wooden case,slide out the board carefully moving black and blue wires so you can see the front of board (side with all the heat sinks on it). the relay is black with blue writing, it clicks when you push the power button the black plastic is a cover this needs to be removed with the TV unplugged,once the cover has been removed plug the tv back in.!!!!!!!!!!!!!!!!!! if you do not think you can handle this dont do it!!!!!!!!!!!!!!!!! take a pencil with an eraser tip push the power button,you can see the relay working but when it clicks back the tv turns back off, push the power button again, push the pencil eraser down onto the shiny metal top part hold it in until the tv comes on, if this does not work unplug the TV and rapidly push the shiny metal top part in and out these moving parts get dirty and manually pushing them usually fixes it plug the tv back in push power,push down with eraser and hold after the tv comes on it should stay on when you remove the eraser. if the tv stays on turn the power on and off a bunch of times, put the tv back together and you saved your self some cash, the way tv repair shops fix this problem is replace the whole board !!!!!!!expensive!!!!!! good luck!

Posted on Apr 02, 2011

  • Bobo8504 Jan 02, 2012

    I tried this and mine is still doing the same thing. Any more suggestions?

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Posted on Jan 02, 2017

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