my 50" tv model #50mf231d/37 ser# XXXXX screen wont come on unless i unplug it an try over an over it gives me a series of 4 red lights twice then two
unpluging and restarting comes on after several tries 10 to 15
Thanks for the question. My name is XXXXX XXXXX X'm sorry to hear about your TV.When it comes on, does everything operate normally? Video and sound are normal?Best,Dan
yeah works fine just wont start up right
This is an internal failure... repair is required. I've seen this a ton of times, though. Are you going to get inside the TV to repair it yourself, or do you need a cost on repair?
is it a big deal or an easy fix
Depends on how much experience you have. I'll post the first check I would run, and you can tell me if it's up your alley, or if you just want a cost on repair:
The first thing I would do is disconnect the power cord for 5 minutes, then remove the TV's entire rear panel. This will expose the circuit boards. Don't touch anything, even though the TV is unplugged. Look closely at every board in the TV, paying particularly close attention to the electrolytic capacitors. They should all be totally flat on top. Are any of them puffy, bubbled, or domed on top... even a little bit? Note, this isn't a picture of your TV specifically... just an example of puffy capacitors:
will it cost more to fix than its worth
If you do it yourself, no... it won't cost more to fix than it's worth. Even if you hire a pro, it should be cost effective. Usually we see symptoms like yours end up at $150-$250.
i took the back off the tv two of the capasitors are humped up do i need to purchase a board or can i replace them
Good work! That's pretty much what I expected. This model gets bad capacitors quite often, in my experience.
If you can solder, you can replace the individual capacitors. If you take this route, be sure to match the capacitors by capacitance (farads) and by physical size so you'll know they'll physically fit in the location. You can upgrade voltage or temperature specs, no problem. Encompassparts.com is a good site, or you can go to a local Radio Shack or Fry's Electronics.
Replacing the board is more expensive, but is usually a more definite repair. You can get the board from Encompassparts.com. Be sure to get the part number from the board itself.
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USAF trained; currently teaching electronics for the DoD.