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AOpen F90 JS needs a new power/inverter board.

The board has gone out and I cannot find a replacement board anywhere. I've searched and searched and have attempted to contact AOpen multiple times with no luck and cant seem to find this board anywhere.
I was hoping maybe someone here knows where to find one. The model on the board itself is JT198AP 2202126501. 


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  • kloops Nov 13, 2008

    I've checked them all out and they all seem fine (non are bulging, nothing looks burnt). Anything I should look for or should i get a multimeter and start testing them that way?


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Hi...there,'re out of lucks! It's only available from the manufacturer. But you can repaired it yourself by replaced a few busted capacitors. Good lucks!

Posted on Nov 13, 2008

  • Cj T
    Cj T Nov 13, 2008


    You can't tell by just looking at it... you need a meter that read ESR / Low Ohms to test for leaked. Don't have one, then just replaced all the caps...


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Viewpia lcd tv backlight not working

Measure the input voltage to back light inverter board, from the main power regulator board. If it is found OK, replace back light inverter board.

Jul 27, 2012 | Televison & Video

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I have a Vizio VF550XVT1A. The screen started to

Hi Alfred Grace,

First of all, thank you for posting your question here at Fixya.

Based on the symptoms you've described, I don't believe that the backlights are already faulty. If backlights gone to malfunction, that are permanent, but in your case you've said that the TV power up fine for half an hour, this is an indication that the fault not came from the backlights but from the inverter boards. Inverter boards are the one giving high voltage to the backlight to light up, it has a built in protection circuit that will activate once there's a malfunction on the board to avoid further damaged because of high voltage output.
If you would like to fix it yourself, I would advice you to replace both the slave and master inverter board. I saw your board at Click it HERE for the replacement. Replacing these boards are not technical, all you have to do is to unplug the unit overnight to drain any voltages from the power supply board, disconnect all connectors and then put-in the new boards. No soldering required. If just in case that the inverter boards are not the issue (I'm pretty confident that the power supply board is working fine), don't worry, the link I've provided accepted return, the fault is on the power supply board.

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


Dec 21, 2011 | Vizio VU42L 42 in. LCD TV

1 Answer

The video on our Insignia 32" LED-LCD HDTV, 1080p

Hi Joyce,

First of all thank you for posting your question here at Fixya.
I've suspected that the fault is not the cable reception, hook up, but inside the set. To confirm it, check if the symptoms remain the same no matter what the input is (DVD/BD player, game console, direct TV, etc.). If the problem still persist, then the fault is either the inverter board or the backlight of the TV.

Backlights are the one generating the brightness backround of LCD to see the images generated at the LCD panel. It has a high voltage source that will light it up and that is the inverter board. If one of the backlights fail, it will produce overload to the high voltage transformer of the inverter board and will sensed by the feedback circuitry and will automatically shuts off the power supply of the inverter board to avoid further damaged. Same when the inverter board gone to malfunction, the feecback circuitry will automatically shut off its power supply.
The backlights and the inverter board must be checked to isolate where the fault came from. Most of the faulty backlight has a physical indication of fault like blacked end, and can be easily identify through visual inspection. If the backlights are in good condition, then the fault is the inverter board. and is a reliable supplier of parts, check your model no. at the rear panel and then search it to their search engine and all available parts will be displays.

Also, I would advice you to double check if your unit is under warranty period (1 year), if so, avail it because the manufacturer will fix it for free. Opening the rear panel will void the warranty.

Please let me know if you need further assistance.
Hope I gave you an idea what's going wrong to your unit.

Have a nice day!
Good luck and take care!
Kind Regards,

Dec 15, 2011 | Insignia Televison & Video

1 Answer

I have a Aquos LC-37GP1U new out of box. Have the blinking light issue. Power on for 2 seconds and then shut off. Replaced the power supply board as it was cracked. Still didn't help. Should I be...


You have to check if the replacement power supply board is the same part no. as the original one, it is printed on the board itself.

I don't think that the fault came from defective electrolytic capacitor because like what you have said, the unit is new out of the box and you've already replaced the power supply board which is most of faulty electrolytic capacitor came from that board.

You've mentioned also that the original power supply board has cracked, I've suspected that the main board also has been damaged because the blinking led light error codes will be encountered if the power supply board or main board gone to malfunction. If you've confirm that the power supply board is the same part no. like the original one, then I would advice you to replaced the main board.

Please let me know if you need further assistance.

Have a great day!


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1 Answer

The screen on the laptop has gone extrmely dim and the fn button with the brightness button will not work.

It sounds like your display backlight has gone out. This is usually because the inverter board in the display, which provides power for the lamp, has gone bad. Replacement inverters are available for most brands of laptops, and they aren't hard to change. Search for your specific brand and model and "replacement inverter" and you should find several sources for the part, and sites with details of how to change it.

Jul 17, 2011 | Acer Computers & Internet

2 Answers

When turned on, monitor power light comes on for a moment and then goes out. Monitor eventually comes on after several minutes. The same happens if the monitor is left on but goes into sleep mode.

This is a common problem on these monitors. There are three or four capacitors in the power supply, three on the inverter board and anywhere from 2 to 6 on the main board that go bad.

The number on the main board depends on how long the monitor has been having problems before it was serviced. The longer the wait, the more capacitors will have gone bad.

The power and inverter boards are easy to repair, the main board is not. As mentioned, it is a multi layer board so removing the old capacitors and the old solder can be troublesome. I would suggest you have someone experienced at soldering repair the main board.

Btw, our shop would charge $60 labour plus $2 for each capacitor.

Dec 18, 2009 | ViewSonic VP2030b 20.1" LCD Monitor

1 Answer

Power comes on but screen is blank

The laptop is powering up normally but the screen is still blank. This means the LCD inverter board might be gone and you need to replace it with a new one.
Replacing the LCD inverter board also works if there are any LCD abcklight problems.
If you are familiar with laptops, then you cna get a new one for reasonable price from ebay. Would have been better if you did specify your laptop model.

May 04, 2009 | HP Pavilion dv6000z Notebook

1 Answer

I saw you answer a question about LCD screens going out

the capacitors are bad those are the only thing that need replaceing, the componenets on the board are likely fine
if you like we can arrage a deal and you can ship me the boards to repair them let me know

Nov 11, 2008 | Computers & Internet

4 Answers

Monitor turns off after two seconds

Your inverter board is bad. They run anywhere from $30 - $80. They are very easy to replace. I have had this problem with three monitors and replacing the inverter board fixed the problem. Hard to say where you will find the part. Just do a search for 'inverter board' with your model # on any search engine.
Good Luck!

Oct 23, 2007 | CTX S762A 17" LCD Monitor

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