Tv is approx. 3 years old. after shutting off, turned back on and the picture will not come in clear. It is dark and snowy.
We have tried disconnecting/reconnecting all of the cables and hooked a different tv up to the outside cable line, other tv has great picture.
Update: Well, we ended up calling the repair man and we had a bad Y-sustain board and also a bad Z-sustain board. According to the guy who fixed it, it was due to over use of the TV and using main power button instead of shutting off through the cable remote. 650.00 later and a few weeks later, we now have a fixed plasma. No real suggestions on how to get more life out of the new boards.
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It sounds like you TV is overheating and the video is suffering and the lamp is overheating as well. Also, if your TV is over 2-3 years old, the mirrors (behind and below the big front screen) desperately need to be cleaned. Clean all filters and fans as well. (Look on side and behind the unit). Is the TV in a "hot" environment and/or dirty environment? DLP TV's are NOT sealed units. They need to be cleaned every few years to work well to have a good, clear, bright picture.
when the screen becomes snowy, it means that something in the cable box is being overheated. what you should do is take a small desk fan and hold it beside the cable box. this has happened many times when my family has played on their xbox 360, and the desk fan solved this problem. i hope that this helps!
A snowy video indicates that your input signal is relatively weak. On the other hand, a noisy picture is when there are too much interference is super imposing on the video.
Snowy picture comes about when the signal coming in the RF INput (Ant/Cable) at the back of the unit is below a certain level. If this is the case, then it is not a problem with your TV but rather your aerial (antenna) or the cable from your provider. A way to verify that it is the ant/cable that is the cause and not a defective TV/tuner is to hook up an old VCR set to Ch. 3 or 4 to the RF IN of your TV using a short 75 ohms coaxial cable terminated at both ends with FP-5 connector. Play a known clear good tape and set your TV to Ch. 3 or 4 as the case maybe. If the picture is relatively clearer, better, then you have just confirmed that it is indeed your aerial or your cable (provider) that needs looking into. If on the other hand, the VCR signal is also snowy then chances are that you have a problem with the input stage of your TV including possibly your tuner.
For your aerial problem, antenna orientation or replacing with a higher gain antenna might help solve the snowy signal. For your cable problem, you have to call-in for service from your cable provider. If it is a TV problem, your best course would be to seek the services of a qualified TV technician since this involve electronic circuitry analysis, diagnosis and possible component replacements.
Additionally, you may try looking for any loose connection, loose grounding, broken wire or anything out of the ordinary in your connections.
Hope that this be of some help/idea. Pls post back how things turned out or should you need additional information.
The model you listed, F27650 uses the new ATC113 series chassis, which is only about 3 years old. The ATC113 chassis is not known to have snowy issues, but if yours is then I would suspect that a solder joint is loose in the tuner. If your set is actually around 9 years old, then it might perhaps have the notorious CTC175 - CTC187 series chassis, which went snowy all the time due to cracked solder joints on the shield grounds around the tuner and microprocessor. In either case, some good quality resoldering should cure your trouble. If you have never done fine solder work on PC boards with small surface-mount parts, allow a qualified tech to handle it for you.
1. Check the TV's horizontal and vertical hold.
2. If there is a VCR connected:
Shut off the VCR. If the problem clears up, the VCR is not properly ?fine-tuned.? Turn the VCR on and troubleshoot the VCR problems.
3. If a converter is connected to your TV and VCR:
The VCR needs to be on channel 4.
VCR may not be ?fine-tuned? to channel 4. Locate and adjust the fine-tuning mechanism until the picture comes in clearly.
The <3/4> switch may be in the wrong position. Locate the switch on the back of the VCR and set it to <4>.
4. Check the fine-tuning of your TV.
good luck :-)