Question about Toymax Magnavox 37MF331D 37 in. LCD TV
Unplugging it and plugging it back in still nothing my ps3 is pluged in right under it and it works
Fault with the main power supply regulator section. Either it will be on a separate board, or on the part of its main board. Check and replace damaged component/s at its main power regulator [SMPS] section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time. Even though you can make it right, it will cost around an amount equal to the cost of a new board; including the cost of (spare parts + service charge) More to say, most of the spare parts to it will be difficult to get from open electronic spare part market. This is true to most of the flat panel TV power supply boards; irrespective of its brand and screen size.
Posted on Nov 27, 2014
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Posted on Jan 02, 2017
I had this problem, but saw other places that it was a cheesy capacitor on the power supply circuit board causing this. I opened it up and took the power supply board out and it was obvious which capacitor was bad...top was bulging and had black stuff on it. It was rated 2200 uF @ 25V...got a new one @ Radio Shack that was 2200 uF @ 35v. Soldered it in (I stink @ soldering, but gave it a shot and it was EZ). Watching the first weekend of college football w/o waiting on a flashing green light for up to an hour so the TV would start! I'm going to try to find the other websites that directed me to this to say THANK YOU...BTW my brother used to have fits with several Magnovox TV's and thier power supplies back in the old tube style TV days. I thought I didn't need to worry about this with an HD flatscreen, but was wrong. I will think twice before buying a Phillips/Magnavox/Funai/whatever else they are again. They have a long list of complaints and I believe a class action lawsuit to refer to about this problem. They should have stepped up and done something!
Posted on Sep 05, 2009
You have a bad Capacitor. Look for a bulge on this cap. Location is 2074 and it is a 25volt 2200MF cap gone bad! And there may be another very close by that may also need replaced...you will see it ,and is bulged or skinned
Posted on Feb 14, 2010
When you mean the light blinks, do you mean it reverts to standby mode? It is confirmed that there are some shorted components in the circuit. In addition to the diode I would suspect that you also have some faulty components that regulate the amount of voltage such as voltage regulators ICs, resistors etc., Replace the diode and if problem persists, then let me know and we will troubleshoot using a service manual.
Posted on Nov 08, 2010
Although a capacitor may look good, it may be weak or bad. Here is what you will have to do. Replace capacitor (location) 2074 which is a 25 volt 2200Mf at 105 degrees. Replace capacitor (location) 2081 which is a 35 volt 1200 Mf at 105 degrees. And you should change capacitor 2066 which is a 16 volt 10Mf at 105 degrees. Please be careful with the last cap mentioned. You can easily tear the PCB trace if you are not extremely careful. This should bring your TV back to life. Thanks for asking and show a few hands of support!
Posted on Dec 25, 2010
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