How can I replace the thermistor or lamp power supply in my Mitsubishi DLP 62525 TV?

Question

When I turned it on the screen lit up briefly, faded out, almost came on again & then went black. The red lamp bulb came on. I replaced bulb assembly, but when I start it up it tries to come on, but no light whatsoever, then that darn red light comes on & stays on. I have triple checked to make sure it is plugged in securely. I figure it must be power supply or something else that is not getting power to lamp. I assume new bulb is good; there is not any continuity between the plug prongs like I would expect in a "regular" bulb; I haven't taken the thing apart to check any actual bulb leads.

Answer 1

Where's your NEAREST Mitsubishi Authorized Servicer?

If your thermistor is bad, you would see the TV light up, display an Airflow problem message, THEN shut down.....

It's your lamp power supply that is causing your problem, and those power supplys are tucked WAY BACK in the Tv set....

You have to be double-jointed to get it out...or have the right tools to remove it....

I'm lucky, as I got the tools for it years ago.....

Answer 2

Are you an experienced service engineer?  The problem is somewhere else and not as you think.  Have you got the circuit diagram of the TV. Check the circuit for correct voltages in all the places.

Still no solution! Call/consult with an experienced service engineer.