Question about Haier HL37E 37 in. LCD TV

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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

Posted on Jun 30, 2008

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

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Power supply is the suspect on this one. You will have to isolate the power supply in the unit and check the voltages on the input and the output side to verify it is or is not the problem.

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Getting 120 v to white plug where it first plugs into board should i have power reading at fuse?

yes after to the fuse you must have a reading of 120vac if none the fuse get busted. if the 120v is present then it will goes through the rectifier bridge diode and primary capacitor of the power supply board to have an stand by voltage at the power supply board. when you press the power button it will send signal voltage coming from the main board to turn on the power supply board. the you will need to get an output voltage at the power supply board of 5v dc, 12v-16vdc and 24v to turn on the all the circuit, the main board sound amplifier and the inverter board for screen back light.if you can get those supply the tv unit will not turn on.

Nov 09, 2012 | Vizio L37 Television

1 Answer

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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...

1 Answer

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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

My lcd flat screen displays black and gray lines with no picture and sound

check your power supply use a voltage tester make sure your power supply has a 5v,12v,24v output.If no voltage is present replace the power supply.

Aug 11, 2011 | LG 42LC2D 42 in. LCD HDTV

1 Answer

My ilo 27inch t.v. won't come out of standby mode.

the first thing you need to do is to check whether your power supply is working do this, you need to open the back cover of your tv can immediately reach the power supply.test the power output using a multitester.there must be an output of 5v,12v,and24v.24 v is for the screen to lit up..5v is for the the cpu supply..12v is for the audio...You can repair the power supply if it is not functioning or buy a new power repair the power supply repace the regulator transistor,the opto isolator,the ic that gives the signal to the opto isolator and check for open resistor near the regulators..hope this could help.goodluck!!

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2 Answers

37 inch vizio has black screen. the vizio display


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