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Mitsubishi DLP problem

If anyone knows what this might be...

I am getting Horizontal lines that run up or down the screen of my Mitsubishi DLP TV. This only happens on any input other than HDMI. With an HDMI source(be it the cable box or dvd player or laptop) the picture is clear. I have tried 3 component sources, 2 dvd player and a cable box, and all display same problem. The effect is similar to a magnetic interference you would get with a tube television if you place something that causes magentic field distortion(unshielded speaker for example).

I suspect the processor or converter or chip or whatever it is called in the DLP tv, is going, or on its way.

Any thoughts?

Thanks
128x128audphile1
shiva
181 posts
 
What your experiencing is most likely a ground loop. If your tv has a 3 pronged outlet plug, try using whats called a cheater plug, which converts a 3 prong to 2. The lines will probably go away. There are other fixes as well. Do a search for ground loops and see if anything comes up.
blindjim
3,092 posts
 
Sorry to hear that... Well then it's obvious the issue is in the analog section somewhere... how about the antenna input?

I'm gonna take a stab at the vertical hold being the culprit. Older sets had an adjustment at the rear of the unit usually set into a spot off to itself. Slight turning of it either with a plastic screwdriver or fingers, if exposed, will usually remedy the issue.... that's what the 6SN7 TUBES USED TO HANDLE... VERTICAL HOLD. i THINK THEY'VE GONE ALL TO CHIPS NOW, BUT STILL SOME ADJUSTMENT SCREWS CAN BE PRESENT. SOMETIMES.

It also might not be sticking out of the back of the box either, so you have to look closely for it.... Call Mit and ask them about your model.
rbstehno
1,401 posts
 
how about trying a different cable from the source to the tv. or how about trying a different input on the tv. couldn't tell if you tried this yet r not.
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