Question about JVC LT-26X506 26 in. LCD Television

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No power. Completely dead.

No power light, checked voltage, good. Fuse near power cord good. I am an authorized appliance repairman but not a tv expert. I have the tv apart just need a little direction. Help, no operation at all! Any tips would be greatly appreciated.

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Can be a few things but most people claim the power supply unit is at fult, here
POWER SUPPLY UNIT QAL0756-001 JVC LT-26X506 usually that part will correct most issues with these TV's i ordered one for my client, i am a computer specialist but i work with almost every type of monitor/ system out their myself, and this is often a isue after a year or 2 with these. good luck.

Posted on Aug 19, 2009

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Posted on Jan 02, 2017

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Hi Gwendolyn,

First of all thank you for posting your question here at Fixya.
I'm assuming here that you're TV is a Vizio L32 HDTV.
My initial advice is to ensure that the AC source(outlet) is live. Please plug the unit to a known working outlet, if you are using a surge protector, directly plug the power cord of the TV to the outlet to confirm that the AC source is not the issue here.
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If your unit is not under warranty period (if so, avail it because the manufacturer will fix it for free, opening the rear cover will void the warranty), open the back cover, check the internal fuse of the power supply board, this is near where the AC power cord's directly connected. Check its continuity using the multimeter/ohmmeter, if you found it open, replaced it with a new same current rating that is printed on its body itself. Sometimes internal fuse fail due to voltage surge/flactuation, aging, etc, replacing with new one resolve the issue, however if the fuse blow again, this is an indication of more serious problem on the power supply board, it needs to replaced the entire board.
If the fuse is intact, you have to measure the output voltage of it through connector J1 (pin 9,10,11). You should be getting 5 Volts. If there's no voltage at these pin, you're power supply board is dead, replaced the entire board. If the 5 volts is present, replaced the main board.
I've provided you a links for the power supply board and mainboard below.
Vizio L32 Power supply board

Vizio L32 Mainboard

Let me know if you need further assistance.

Rating and feedback are highly appreciated!

Hope I helped you.
Good luck and take care!
Have a nice day!
Kind Regards,

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If you have multimeter available you can actually check if voltage present at the end of your power cord first.
If it's OK than you have to remove back cover from your TV and locate power supply board. It's very easy - it should be next to the power cord receptacle. First look for capacitors that have bulged tops instead of flat ones. If you locate any - replace them and check if it's going to take care of problem.
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1 Answer

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(IT REQUIRES TECHNICAL SKILLS)
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1 Answer

Tv dead,checked fuse plug OK


If the TV goes off completely, then is usually a faulty power board.

If the TV goes in standby, then it is in protection mode.

Try first leaving the TV power cord unplugged for some times, let say one hour or so.

The flashing light indicates a diagnostic state called protection.
When the TV goes on protection there are only two possible causes.

1The internal circuits are jammed because of electrostatic charges accumulating on capacitors, or because of a wrong voltage read by the main chip on your monitor controller board. this started the protection circuit.

2 The protection circuit detected a wrong voltage or abroken contact, identified an internal fault and kicked in , starting the flashing light.

If you are in situation one, then the TV will reset just unplugging power cord for one or two hours,sometimes even minutes.

If you are in situation 2 , then there is an internal fault.

If under warranty contact the manufacturer ringing the number on the user manual

If you want to repair at your own expenses, just locate any good qualified repairer.

If you want to DIY you find parts here,

All: Appliance parts, electronics parts & more from PartStore.com

Encompass Parts Distribution

LCD/Plasma Electronic Replacement Parts: Plasma & LCD TVs, Appliances |


On LCD Pay particular attention at inverter and power board, power board can be inspected looking for bulged or leaking capacitors, then tested with a multimeter. The inverter is more difficult to test , there is need to read voltages, should be done by a tech. Also the LCD controller board can cause same problem

On Plasma, test Sustain (Ysus/Zsus) / Buffer boards , cables to plasma, digital board and power board.

On Rear Projection / LDP : check lamp, lamp ballast, power board, and convergence.

On CRT TVs, check ballast , flyback transformer, CRT, Tuner, Convergence.

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If a new power supply is needed, contact me and I can point you in the right direction.

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