I was doing some electrical work in my house, I disconnected all power source.
when I connected the power again, my picutre is not coming in at all on my akai 42 inch plasma.
it looks snowy, and jumps around theres adio but no picture what do i do?
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Hello, The snow is due to a tuner failure, this can only be repaired by replacing or repairing the tuner itself. Your post shows model number PV-DM2793, and the tuner part number is ENG36715G. It's available from several electronic part stores, try [email protected], there is one still available there. The tuner is located directly behind the cable connector(threaded connector)located in the rear of the TV where the cable or antenna connects to, it solders vertically into the main board.
I can suggest unplugging the TV and leaving it off over night. This will do a power reset and may correct the problem. If not the only way to determine the problem with the TV is testing the circuits. For a simple repair you can expect to pay in the ballpark of $100 for the repair.
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.