Start at the wall plug. Did a breaker trip for that outlet? Next use a multimeter to check voltage at the power input to the TV where the power cord connects to the mainboard. Be sure you are checking AC voltage. Next check DC voltage at the power switch on the inbound side of the switch. The power switch is usually after the transformer and AC to DC circuit. If you are getting power to all three places, check the other side of the on/off button. This will eliminate most of the power-related circuit. Also, look for blown capacitors, or burned areas around the power circuit.
"wont light up... ..what have I zapped.."
As long as you didn't leave stray cables dangling around from the removed DVD, there should not be any short circuits.
If you did, something may have touched where it shouldn't and shut down or blown the electronics.
Another cause could be the self-protection firmware detects a fault, due to wrong amperage or an 'open circuit' condition.
ie: The missing DVD module or part could be confusing the TV.
The question is old, but this might still help someone.
I had to replace mine on the 55" model, and I went with the STK 392-150's. The cause of failure is normally overheating, and with mine they did a lousy job of applying thermal paste to the backs of the ICs. (as you can see in the pic, so I'm sure that is why they failed). Depending on where you buy them, you can probably find the 150s or 180s online for the same or lower price anyway, so go with the higher power rating since that means they will likely withstand more heat for longer. But make sure you buy a good thermal paste and apply it evenly and correctly. Mine is working great now going on 3 months, I used Tuniq TX-4 paste. BTW, I'm a lousy solderer but I removed the old and soldered-on the new chips by hand. It looked pretty rough but ended up working perfectly. Anyone can do it!
must be the power supply or a fuse ,does the fan come on and a orange light beside the power light flick on and off?if so count the blinks before it shuts off could be the lamp program also,just refer to the manual that you can download freee from JVC M anuals and count the amount of orange flickers.
what are you asking?how to change,if you have the remote use theater pro or natural cinema for movies ,and also split screen,withoiut remote manually scroll to picture page and use up and down settings to set it on choice
Easy answer, most of the time verticl lines are due to dirty lenses and bulbs inside of the tv, This can be resolved 1 of two ways: either you can open the back of the tv and clean both the lenses and bulbs with a special lens cleaner or you can pay a tv repair man to do it they usually charge anywhere from $60.00- $150.00.