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My sanyo t.v have a problem inpower supply, I already chage the voltage regulator i.c

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Replace zener diode5Volt or 12 Volt..but also you have to check the resistor in Power Regulator area..

Posted on Nov 10, 2010

  • sayag simon
    sayag simon Aug 21, 2014

    thanks itry it

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My asus motherboard is shown the cpu is in over voltage stage what will be the problem in this case btw i already replace with new power supply unit .....


Regulators (and capacitors) on the motherboard control the CPU voltage, not the power supply. The power supply is never exact enough.

How much overvoltage is it?
Be sure and check your voltages in BIOS if possible, it's not taxing your computer but it is more accurate than some voltage reading programs. Also try another program to read the voltages as you may get different results.

Sep 08, 2016 | ASUS Computers & Internet

1 Answer

Sanyo DP46840 won't turn on in house but can take it out on the porch where it's cooler and it will turn on what could be wrong with it?


Fault to the main power supply regulator section. Its start voltage section circuit have the problem. Either this 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. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/
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.

Dec 03, 2015 | Sanyo Televison & Video

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Sanyo PDP42XS1 no VS voltage


What to doubt? Fault to 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.
http://electronicshelponline.blogspot.com/
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.

Aug 03, 2015 | Sanyo Televison & Video

1 Answer

Hi! i have sanyo televesion, model ts21sf1k. the problem is no power. i replace the power ic regulator STR w6753. but still no power. no voltage out in power supply.


SMPS circuit is not functioning. Check and replace all the associated component to STR. If you wish to get some details; visit the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/

Jun 24, 2015 | Sanyo Televison & Video

2 Answers

Green light comes on no picmor sound


Hello Afox5, hi, make sure that there are no user controls or setup that are out of order. as a backgrounder, TV of this type mostly has two boards, power supply and main board. On the power supply board, this has two section, primary that deals with mains voltage and secondary that deals with TV supply current requirements, if you see green light mean that power on the secondary section of the power supply board of your TV is working, but it does not mean that the power supplied to the main board is correct, the supplied current produced by the power supply section to the main board that controls sound and picture needs to be checked, so voltages are needed to be checked and loose wiring, or screws needs tightening, are a common trouble, but some go to extremes like replacement of any boards.

Aug 31, 2010 | Sanyo DP42746 42 in. Plasma Television

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I have a SANYO model # AVM 3659G, Wont come back on


Hi, that probly a power supply plroblem, or a high voltage regulator and the horizontal transistor that drive the high voltage transformer at a high frequency (15.000 hz )if you think you can trouble shoot that ok; if not ask a friend who you no he nows about trouble shooting in tv. or you can go to a repai r shop should not cost to high half hour + parts
Beware high voltage in there(30 thousand volts
hope that help you

Mar 13, 2010 | Sanyo AVM-3659S 36" TV

2 Answers

My tecnics Amplifier Model # su-v98 has no power. I've checked all cords


Try these test, the only common possibilty would be the transformer and the power supply if both channels are out.You better to check both the positive and negative voltages from the power supply to see if both are present or if one or both are missing.This would be dc voltages of approx.20 to 40 volts.The positive voltage must be equal to the negative voltage,with the exception of their polarity.If one higher than the other, the regulator in power supply is busted already.The transformer can be checked for AC voltage before the power supply.This reciever uses a single power supply so the problem would be,common to both channels.You better change the regulator and checked some capacitor near the regulator.

Jun 14, 2008 | Technics Audio Players & Recorders

1 Answer

Sanyo TV Model# DS32224


This is usualy because there is either a high voltage regulation fault, or a main power supply regulation fault.

There are many things that can cause this. When the high voltage goes too far down, the raster will enlarge. High voltage regulation can be caused by faulty components in the feedback sensing, or in the high voltage multiplier, or in the flyback windings itself.

A quick way to sort of know if the high voltage is regulating is to wind the brightness and contrast from one extreme to another and observe the raster size. If the raster is changing size with the brightness on the screen, the regulation is not working well. In some of the low cost sets there will be about a 2 to 5% raster size shift in this case. The high end sets will have a near 0% shift in the raster size. A size change of about 2% is acceptable for most sets. If the CRT is weak, this test will not work well, because a weak CRT will not properly load.

If the main power supply is operating slightly over voltage, the raster size will increase. Usualy, the brightness will be a little on the high side when the supply is too high. Voltage regulation faults can be from warn components in the voltage regulator area, or in the feedback control.

This should be looked after by an experienced TV service tech. This type of fault can be involved.

Jerry G.


Nov 09, 2007 | Sanyo DS32224 TV

1 Answer

Sanyo PLV-55WM1


Hi I read your problem with the Sanyo PLV-55wm1. It sounds to me like a power supply problem. Like most new electronics devices, they use a switched mode power supply (SMPS)to supply the voltages to the rest of the set. Many of them use a current feedback loop to sense a short in the circuits that it powers. I would check for a shorted diode in the high voltage section of the tv. If any one of the components is shorted around the high voltage circuit, The current control line will be zero forcing the regulator to shut down.

Mar 25, 2007 | Sanyo AVM-1909S TV

1 Answer

How to test the voltage regulator


The only test you can do on this regulator is to see if is shorted or not,this is a switching regulator ,that means is design to be use in a switching power supply witch turns the transistor on and off constanly and uses feedback to stay regulated,the B+ they use in the collector is around 150 volts,an small square wave is applied to the base ,it gets amplifies and energizes the primary side of the transformer to generate all the supplies ,one of this supplies provides the feed back.I hope I have given you the more than the information you needed.

Oct 16, 2006 | Sanyo DS27510 27" TV

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