Question about Toshiba 57HX81 57" Rear Projection Television

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Horzontal feathering Md l 57HX81 SN. 59009581 CHASSIS 0159 I have severe horizontal feathering at start-up. Especially bad with an non-HD signal. After 15 min warm-up usually pretty good for an hour. Then the picture flashes intermittently. I am using a signal from a HD DVR. Thanks for any help. I am an industrial electronic tech with Ball Corp. I can do board level component replacement. Especially if you tell me what is real heat sensitive. David

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Check this service bulletin and test the components described, it may be the same problem.

Posted on Oct 08, 2008

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I have a rca hdtv and it will turn itself off then back on after a few seconds cna someone please help me with this


sounds like the classic sign of a bad small signal board especially if you have one of the ITC222 chassis rear projection RCA tvs

Mar 21, 2013 | RCA Projection Televisions

1 Answer

Timer light will not stop flashing. can't turn on TV


Unfortunately the first generation DLP's from Mitsubishi are prone to have Capacitor failure through out the chassis. Most likely that is what your set is experiencing. I would start by replaceing the suspect caps on the DM amd The Power boards. You can get the V26 Chassis DM/Power repair kit from www.tvrepairworld.com which also contains instructions.

Jun 21, 2010 | Mitsubishi WD-52725 52". Rear Projection...

1 Answer

My 57hx81 has a slight concave bow in the middle top to bottom


Sounds like a problem in the vertical sweep circuit. Check voltages to your convergence ICs. If they are  not to spec then look for bad fuses and capacitors on the power board. These will throw off the DC voltage to the convergence chips causing the bow effect. I've had a single bad pico fuse ($1) cause this symptom. 

Dec 06, 2009 | Toshiba 57HX81 57" Rear Projection...

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Toshiba 57HX81: Green works but Blue and Red seem to be out.


Do you still have reds? Is the image still clear though discolored? If so you ought to replace the blue bulb which has most likely failed. The part no for the 57HX81 model blue CRT bulb is TOSHIBA     23008753. 

Jun 11, 2009 | Toshiba 57HX81 57" Rear Projection...

2 Answers

57HX81 Toshiba. picture gets squiggly on dvd input


Perhaps 2 things. Does TV get a picture without DVD connected? If so I would bet you have a faulty connection in your signal board where the in jacks are at the back of the TV . Check to make sure cable from DVD are not bad, I have used cables before and got a false positive. Try turning and spinning the jacks once you have a picture.Make sure your signal board is firmly pressed into its slot on the signal board chassis. Thats it for now. Good luck.

Jan 20, 2009 | Toshiba 57H81 57" Rear Projection...

1 Answer

VZ7 chassis problem began with rolling picture and now protection kills power on process


Good Day, NT-Services;

You may a vertical problem but I think it's not the vertical output amp. The problem should be in the voltages feed the vertical circuit. I have had cocern many times, so try this first:
1. VERTICAL ROLLING, VERTICAL BLANKING BAR LOCKING IN THE MIDDLE OF THE PICTURE, ALSO MAY HAVE HORIZONTAL PULLING OR TEARING. CHECK C2C52 10 UFD @ 50 V OFF THE BASE OF Q2C51 ON THE SIGNAL PCB. 2. CHECK C2P05 100 UFD 16 V OFF PIN 3 OF IC2P01 AND IC2P01 PART # 270P466020 (9-VOLT REGULATOR). BOTH ARE ON THE SIGNAL PCB.

Replace these caps no matter how they check.

2. Shuts down; may be intermittent, self-diagnosis ERROR 23 or 24. Check solder connections at connector "DY" on the yokes. Or/and check C411 2200 UFD 35V AND C412 10UFD 50V, both located on the main PCB.

3. Service adjustment codes:
a. Option menu; press MENU 1270
b. Service menu; press MENU 1257.

I hope this was helpful. Good day, big IRISH.

Jul 30, 2008 | Mitsubishi VS-50705 50" Rear Projection...

2 Answers

Audio


How are you hooked up? I.E. terrestrial, satellite, ?

If the channel on HD isn't strong enough to pull the signal, sound won't play because it isn't locked. Because you have sound on non hd it is a signal issue not the tv.

Feb 16, 2008 | Mitsubishi WD-62525 62" Rear Projection...

1 Answer

Cobwebbs between the screen and the screen protector


Hi pykeman,

I have successfully used a feather duster taped to a vacuum cleaner extension tube with duct tape. Remove the back panel of your projection television, then remove the the rectangular panel near the top over the chassis where the cabinet exposes the inside screen area. You will see the red, green, and blue CRT lenses. Insert the feather duster through this rectangular opening and sweep your cob webs away from the screen. Works for me every time.

Regards,
MyTvGuy

Jan 19, 2008 | Philips 46PP9302 46" Rear Projection...

1 Answer

Toshiba 57hx81


was ther any damage done to the cabinet miror may be miss alinged or posible bad regulator get back to me

Aug 31, 2007 | Toshiba 57HX81 57" Rear Projection...

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