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Power supply board pslh-a951a(dpsu42/47)

No 12volts no 24volts has 5volts and start3.2vlts

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Relay clicks when applying power. Yellow light comes on. TV is dead otherwise. Power supply is outputting +5, 12, and 24 volts Mainboard (3647-0282-0150) has +5 and 12 volts always applied. Checked...

Amber light on means standby voltage is high. IF amber light does not go white when power button is pushed the its one of two things.
A. No power on command from main board. Usually labeled PS-On. Should go high from 3.3v or maybe 5volts. If not present Main is defective.

B. If the ps-on line is going high then your problem is a defective power supply.

Oct 15, 2013 | Vizio XVT472SV 47 in. HD-Ready LCD TV

1 Answer


Check the 5V regulator at power supply board. It might have damaged.

Oct 06, 2013 | Televison & Video

1 Answer

Bad powerboard

What is the brand name and model number to your TV? Provide more details please. Normally, LCD TV power supplies are replaced as card basis. If you wish to get more details, check this site linked below. Pull up older posts there. Check the site with patience, as it has over 2350 posts now. All are related to electronic equipment repair help. If you search the site in Timeslide option, which can be selected from the drop down list at the top left of the display window, it will be easy to locate the related post. You can also do a search by type in the brand name to your device into its search box at the top right of display window.

Apr 26, 2013 | Televison & Video

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Tv shut off and now no image or volume

hi, the first step that you need to do is to check the power supply board this will require opening the back cover of your TV set.once the cover is remove you can immediately see the power supply board this is where the power cord is connected.visually check the components on it remove any bulge deformed capacitors,check the fuses replace the fuse if it is burned.test the power board after replacing the parts.use your multimeter to measure the power output there must be a 12v,5v 24volts present on the output terminal....If this voltages are present then your TV should be working again.....

Dec 28, 2011 | Vizio L37 Television

1 Answer

Blinking red light of death. 5 blinks. After holding power button while power on for 1 minute and then pushing agaiin I got 1 blink. Set has not been used that much as it is in the bedroom. One source...

Hi Billy,

5 blinks is an error code for 5Volts malfunction either on the P board(power supply) or the A board (main board).
1 blink is an error code for A board (no communication between the system CPU and panel CPU).
Since you've got 2 error code which are both related to A board, I've suspected that the A board is already faulty but you have to confirm it to isolate the P board from fault.

You have to check the 5 volts output of the power supply using the multimeter set in DC voltage measurement. Measure the output of the power supply board through connector P7. If you are getting 5volts on that connector you have to replaced the A board to resolve the issue. If there's no 5 volts output then the P board is faulty.

Faulty electrolytic capacitor can drop the output voltage. Let say you are only get 3 volts or less on the 5volts line, then suspect faulty filter electrolytic capacitor. Most of the time it has a physical indication of fault like bulged/dome at the top and can be easily identify through visual inspection like in the sample picture below.

11_22_2011_12_37_20_am.jpg<<< with dome at the top

If the 5volts line dropped its voltage, you have to disconnect the load and then re-measure it (do it very quick, don't let it turn on for a long time without the load). If the 5 volts line normalize after disconnecting the load (A board) then the fault is on the A board and not on the P board. If the 5 volts line still not intact after disconnecting the load, then the fault is on the P board (5volts line).

I've provided a link below for the suspected boards.

A board (Main Board)
P board (Power supply board)
Note : before ordering online, double check the part no. of your board that is printed on the white sticker on the board itself to ensure you will get the exact replacement. There's some instances that the manufacturer used different version of the board even on the same model no.

Please let me know if you need further assistance.

Ratings and feedback are highly appreciated.

Hope I helped you.
Have a nice day!

Nov 21, 2011 | Panasonic TC-P42G10 Plasma TV

1 Answer

Power supply is good but indicator lit just blink ones and then off, at first i fixed the power supply, i changed the 5mo380r and power supply board has 5volts standby now but when i turn on the main...

i had a similar problem and I thought I had fixed the power supply but still didnt work. long story short I ended up replacing the power supply and finally worked.
good luck

Jun 17, 2011 | Samsung Televison & Video

1 Answer

When i turn tv on the power button shows its on but no pic or sound

the power supply of your TV must be check.the power output of the power supply suppose to be 12 volts for audio,24 volts for the backlight lamp and 5volts for the main CPU. use a multimeter to measure the voltage In the case of your TV it seems only 5 volts is present that is why you have a power indicator the back cover of your TV and measure the power supply.power supply board is where the power cord is connected...

Apr 19, 2011 | Sansui HDLCD3200 TV

1 Answer

My Envision series AOC TV lights up, but when I press power the light changes to blue as if its gonna turn on. Then it just goes back off. Any ideas?

This is either a problem on the Power supply board that supplies the 24volts to the Inverter board or the inverter board my have a bad capacitor or two, or a bad transformer. It's difficult to say exactly without testing it.

Nov 27, 2010 | AOC L24H898 24 in. LCD TV

3 Answers


This could be a power supply fault,check the volts on the red,yellow and earth lead(black)THE RED LEAD =5VOLTS
Diconnect the pc mains plug from the computer.
Disconnect the power supply leads from the motherboard,and switch on and check the volts on all leads of all those I mentioned.If these are present when they are not connected to the main board,then the problem is with the motherborad,most likely the bios chip is faulty.This chip kicks starts the PC into coming on.Failing this send the PC back to where you bought it and let them fix it.

Aug 07, 2010 | HP Compaq Presario F500 F700 and G6000...

2 Answers

No Power

try to check 5volts on processor, south&north Bridge.if ever no 5volts supply replace Q7&Q7.. also check the bios.

Oct 25, 2007 | ASUS P4GE-MX Motherboard

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