About every 4-5 min the picture and sound on my 50" Wega goes out for about 20 seconds then comes back on.

Its time for new lamp in tv as existing lamp got weak/ near to end of its working life and causing this problem.
Lamp replacement procedure is easy and written in user manual.
Thanks.

i have a 50 inch wega that i just replaced the lamp. it wont stay on. i lose the pictuer and sound after a min or so then lose it for a min then it comes back on???

How long have you had the set? If its been at least two years then its time for a new lamp.

Thanks
you can email me at [email protected]
if you need futher assistance. I believe your lamp is faulty...

If its model number is KF-50WE610, had you replaced its Lamp recently?
If Lamp is replaced, please check Lamp cover/ door that is not seated properly, make sure its fixed securely.
3 times light flashing shows Lamp cover error.

The lamp is going bad. If it was the thermal fuse it would not be intermittent. It is very common for some Sony sets like yours to do exactly what you describe when the lamp is going bad.

TRY NEW INPUTS AND CONNECTIONS,,TRY ALL NEW JACKS ,,, ALSO TRY IN THE MENU COLOR CONVERSION

change the lamp

it sounds like your "lamp" is going out look for a hidden compartment.. or in your owners manual to see where its located its an easy fix and costs much less than a new tv

After being on a little while, the screen goes black (no audio as well) for 20 to 30 seconds. Green light stays on. Then, picture comes back on and takes a couple of seconds to get up to full brightness. About 5 seconds or so after the video comes back, the audio returns.

Until this morning, has only happened a couple of times a day, now happening more often. About 3 times in last 20 minutes.

KDF-E55A20 is about 3 years old.

The bulb was loose, pulled it out, put it bakc in and tightened the screww. Works like a champ