Question about Sansui HDLCD-3700 37 in. LCD Television
I am having a proble with may lcdtv it switches itself off sometimes when i am watching it in the afternoons, and when i try to switch it on, the red light goes green to show that its on but it does not go on, after a while like 30 minutes it then switches on. Sometimes it takes an hour to switch on, what is the problem Here is the descripition of my TV:- SV-40LCD Overview 40 LCD WITH TUNER Specifications 40" LCD SCREEN ASPECT RATIO: 16:9 RESOLUTION: 1366 X 1024 CONTRAST:1000:1 BUILT IN TUNER PC INPUT: ANALOG RGB\DVI-D SUB HDMI INPUT HD READY Recommended Retail Price R 17,499.00
The main power supply regulator section circuit fault. Either it will be a separate board, or the part of 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. 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.
Search the site by type in the "brand name" to your device; in the "Search box at the top right of the display window of the Homepage" to get gathered related posts.
Posted on Apr 11, 2017
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Posted on Jan 02, 2017
SOURCE: blue dots on my lcdtv
Sometimes the voltage can be set to high by the factory. Throughout time, blue dots will appear. You will have to remove the back cover off the tv, find the "voltage Screws (they are labeled) and turn down (left) JUST A Notch. Have seen this done many times.
Pray that the panel isn't blown out or bad projector tubes. They are expensive.
Blue dots and screen flicker are VERY common on the newer LCD and Plasmas
Also, if you have a pixel setting on your TV (not sure if that one has it) Try setting it to 480p.
Posted on Jan 17, 2009
It's most likely a capacitor. Open up your television, and look at your power circuit board. Look to see if any of the capacitors are blown.(the will be bulging look up an image of a blown capacitor to get a better image if not known already. Mine was (CS19, CS21, CS22, CS23) Also on (C672) from the Circuit Board.Can you look at the voltages of these for me? I'm missing the capacitors.
Posted on Jul 01, 2009
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