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HAIER LCD L37-A8A-A1. Problem with power supply no 16v;12v;5v can I have a service manual on power supply

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SOURCE: Haier 37" LCD TV...need a power supply

There is a Haier Authorized Servicer in NYC who repairs the panels. Give them a call . Website is www.asnyonline.com

Posted on Jun 30, 2008

  • 1 Answer

SOURCE: ILO LCD, Power supply issue, MLT169B. 24v output is dead.

I want to know R3 value

Posted on Dec 27, 2010

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Haier LE50H3280 will not power on


If all power supply voltages are within specs, then it just might be an issue with your main board,.

If PS board has a relay make sure that it is also working.

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1 Answer

TV cannot turn on


Check and replace the damaged component/s at its main board. Contact any service technician.

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Power supply to mother board connection manual for 600watt diablotek model number (psle600)


????
if it's a PC psu
The connectors voltage are indicated by colors
yellow is 12V
red is 5V
orange is 3.3V
black is 0V(GND)
green is PSon
purple is 5Vsb
blue is -12V
white is -5V(optional)
gray is PWRGOOD/PWROK

12_21_2012_3_01_00_pm.gif

Nov 30, 2012 | Diablotek Computers & Internet

1 Answer

Power but no picture


you need to check weather the power supply has complete output dc voltages 5v stand by, 5v detect 12v-16v for audio and tuner and 24v for back light. if just only an stand by voltage, the cause is either the power supply failed or the main board detect an error in the inverter board .

Jul 26, 2012 | Samsung LE32R41BD 32 in. HD-Ready LCD...

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37 inch vizio has black screen. the vizio display


L37HDTV10A THE TV ON NO VIDEO NO MENU SAON OKEY

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Nov 21, 2008 - I have a proview 19" LCD TV PA-19DK5. In the last few days when I turn on the tv the picture appears and disappears after 1 sec. audio is fine, when I use my xbox 360 through the component...


Please post the pictures, that will help. Do find any fuse in the inverter circuits, if you do have 5v (for logic) and 12v (for backlights), then may be the power supply is OK but I am not sure that the inverter is using 12vdc since you have some caps rated at 35vdc, Iwould expect the inverter to be using 24vdc for backlights. See some of the pictures I posted here: http://s807.photobucket.com/home/budm/allalbums

Jan 11, 2010 | Proview PL913S 19" Flat Panel LCD Monitor

2 Answers

ASUS P5GL-MX performance


Install new power system!
Thanks,]
Melcom Smit

Oct 04, 2008 | Computers & Internet

2 Answers

Gateway 900g


I'm writing this using a recently repaired Gateway 900g. You may be correct about the power supply, as that was the problem on this unit. There was absolutely no response with this unit. No blue LED, no dim display. Nothing.

WARNING: BE SURE TO UNPLUG THE AC LINE CORD. THE POWER SUPPLY HAS DANGEROUS 120 VAC PRESENT IF LEFT PLUGGED IN. If you don't know what you're doing, it's best not to attempt a repair!!!

Disassembly is a bit tricky, and there's a variety of different sized screws used; so keep track as you go. First you remove the front bezel (be careful as the two control boards on the lower right need to be disconnected). There are two screws (lower left and lower right) that secure the shell, the rest of the frame is just a snap fit around the perimeter.

Then remove the 6 screws that hold the LCD frame to the rear plastic shell. Careful here as well, as you must disconnect the back light cables AND the signal cable to separate the LCD from the Power Supply / Signal Processing board.

The Power Supply board mates to the Signal Processing board thru a 2x5 pin header. This contains convenient points to check the +12V and +5V supplies. In my case the +12V was OK, but the +5V was reading about +2.5V...not good! THIS IS REALLY DANGEROUS TO CHECK AS THE 120VAC IS ONLY AN INCH AWAY.

Here was the key symptom on my unit. Your's may not be the same. If I disconnect the Power Supply from the Signal Processing board, then the +12V and +5V read correctly (as well as the +16V that goes to the Backlight Inverter section).

However, once I connect the Signal Processing board, the +5V drops to +2.5V. However, the Signal Processing board seems to run correctly off of an external supply drawing about 300mA.

On closer inspection of the Power Supply board, I notice that 4 capacitors had buldging tops (domed). This indicated some stress. These were capacitors C205, C206 (470uF/25V) in the +16V section; and C210 (470uF/25V) and C209 (220uF/25V) both in the +5V section. I didn't have a Capacitance Meter handy, so it was simpler to just replace all four parts with similar values. (There's a lot of latitude in making these substitutions.) But be sure you have voltages a *least* greated than those needed; i.e. 16V or 5V. They used 25V to have plenty of headroom.

After replacing the 4 Capacitors, the Voltages and Blue LED responded normally. After reconnecting to the LCD assembly, all was well. Reverse the disassembly process, and you are ready to go.

nateoceanside@hotmail.com

Aug 06, 2008 | Microsoft ChiMei CMV938D 19" Widescreen...

1 Answer

Power connection pinout


Here is a pin connection specification for the ac power supply (dual voltage adaptor)
>socket/plug for a Compaq TFT450 LCD Monitor that she
>supplied (edited for further clarity).
>
>The pins of the male connector (a PS2 mouse type connector) should be connected like this:
>
>
>
> 1 2
>
> 3 I 4
>
> 5 ^ 6
>
>
>
> GND GND
>
> 5V I 12V
>
> 5V ^ 12V
>
>
>
>For clarification - the male will be the end of your cable, and not the socket on the monitor.
>The I is the central polarising bar of the connector, and the ^ is the notch.

Jun 16, 2008 | Compaq TFT450 14" LCD Monitor

4 Answers

Cyberhome CH-DVD 300 DVD - YELLOW light indicator of what problem?


Marlin P Jones & Assoc. Inc.. has a 5V 2.2A /12V 1.5A cord power supply that will fit into the space where the original power supply was! Lists for $6.95 but online price was $2.95. Works great! Connect 12V supply to the yellow lead and the 5V to the red lead of the output connector, black is ground, common to both supplies. Use QC terminals to the power cord input terminals, remove the cable clamp and the power supply will nestle beautifully in the space without need for support. (Remove the old circuit board plastic (3) and rear brass standoffs and use the front brass standoff for the output cable shield ground connection. (Part No. is 15955-PS) I bought two because I have a 2nd Cyberhome CD-DVD 300 which hasn't crapped out yet.

May 15, 2008 | Cyberhome CH-DVD 300 DVD Player

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