Question about Sanyo Televison & Video
I have a Sanyo dp50740 that I bought knowing it didn't power on. Bought a new power supply board for it, and now I get an audible "click" with the power LED coming on for 5 seconds or less, then turning back off. Any ideas on where to go from here? Thanks.
What you have is most likely a failed main board. These sets are known for this problem. There are several different variations of the main boards. Make sure you order one that matches yours. The main board part # will start with J4@#. The main board part # should be on a sticker either on the main board itself or on the coax input terminal casing. I hope you got the TV for a good price !!!
Posted on Sep 02, 2012
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Posted on Jan 02, 2017
It's a power supply related problem. When it turns itself off, this it called protection mode. The TV automatically turns off to protect other parts form being damaged.
The most common problem is the Power Supply Unit or the Backlight Inverter Board.
You may have to take the TV to a repair shop to find out which one is bad. Paying a repair shop to replace the board for you maybe more than the TV is worth. If you let them diagnose it and you replace the bad circuit board yourself, it would be cheaper.
Here's a place I use to get parts for TVs:
The problem is the repair shop may charge you double or three times of what the part costs at the web site link above. Then, plus labor. I just want to save you money. :)
Posted on Jun 03, 2009
hI MY NAME IS COL, COLINDAWSON@ROCKETMAIL.COM, I have the same TV with the same problem. It has something to do with a 'dew' sensor inside that trips it out when it senses moisture. It seems after a while the sensor gets carried away and cuts the unit out as it is with your TV. We found if you blow a hot hair dryer through the vents at the back for a few minutes, it will eventually come back on. Once the TV is warm the problem stops. I dont know exactly where the sensor is, and if you find out id love to know. Hope this is of some help. Also im trying to find a replacement remote for the same TV as mine is missing.
Posted on Jan 30, 2009
Contact Pioneer at 1-800-421-1404 about getting an in-home power supply replacement. This is a known issue with some plasma displays. Some of you would experience a loud pop and then the power supply fails. You get a red light below the ON button, when you press on, the red light will turn green for a second and then back to red. The plasma display will not turn on after the power supply fails. Call Pioneer at 1-800-421-1404.
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Posted on Mar 29, 2009
The Inverter is trying to produce the high voltage to light the backlight. It looks like it cannot hold the charge to maintain the high voltage level in order for it to stay on - you get a momentary display at initial power-up thus see the logo. Replace the Inverter board.
Posted on Oct 24, 2010
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