I have a Mitsubishi VS-55707 and I have a couple of problems. first it takes 5-10 minutes to warm up (scrambled picture) after that it works fine, but its getting longer to warm up. Second every once in awhile it shut off by it self, it comes back on if I use the button on the tv. Thanks for the help

That would be the CRT Board to Red Tube,Mats Electronics did have some CRT boards $9.95
1-800-628-1118
Encompass Parts Distribution might have them 1-800-638-3328

look to see if you see the word PIP on remote or tv if it does, then you do

Set may have poor/cold solder connections on power supply board and convergence board.

If the picture looks like a 3D then you have a convergence failure.
I would suggest to visually inspect the STK Ics for dry or crystallized solder joints.
IC8C01 - STK392-110
IC8C02 - STK392-110

check the high voltage leads on the multiplier flyback transformer for leakage

This model has several caps. on the power supply voltages such as the 5v, 9v and 12 v lines that begin to dry out and open and such problems begin to manifest themselves. Most likely this problem will continue to get worse and worse. As far as burned in images there is nothing that can be done short of replaceing all three picture tube and that is very expensive and this unit is to old to consider a 1000.00 repair.

I would not recommend working on a TV unless you have a great deal of knowledge about them.

it is probably your power relays do you have a part # i could help you look around

on the signal board replace the caps by the 5/9 volt regulators. c2p04 is the main culprit. 6 caps in total can be changed. I believe c2p05 also.

Hi there!
Have you checked for dust on the Tubes and mirror? This may cause a bad picture quality. Also power supply related problems like capacitors can cause a dark picture. Try replacing some of them in the power supply area and line stage.Also adjustments in the service mode,but for this you will need the service manual. Good Luck,JUS004

Better get this checked out by a technican. One possible reason could be coolant from the picture tubes leaking down onto the printed circuit board causing this symptom which could end up destroying the circuit traces on that board. Other possibilities include problems in the power supply or deflection circuits. If the set is over 8 years old, I would just replace it with a HDTV.