Top 20 Toshiba 37AV502U 37 in. LCD HDTV Questions & Answers


If indict or light is there, check its main power supply regulator board. replace its or replace damaged component/s. If you wish to get some details, http://electronicshelponline.blogspot.com/Pull up older posts.

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The problem is most likely the the screws are loose on the inverter boards. The screws must be tighted as they provide the ground to the inverter bds. The inverter boards are undet the shields on both sides of the unit after pulling the back cover. One way to make sure that you are losing back lights and not video is when your picture goes black, shine a flash light on the screen at an angle and will see the video is still there. This mean the back lights are out. If you do not see the video it may be another problem

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have some to check it for you you might have a power supply problem

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best way is to call whoever made the set for length, thread type and number of bolts.

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Hi,

First of all, thank you for posting your question here at Fixya.
Please email me at jimvincentvillanueva@yahoo.com, I will send to you the copy of Toshiba 37AV502 schematic diagram. It is a PDF file format and can't be uploaded here.
Have a great day!
Jdvillanueva

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Deffective system ic.For repair and replace system ic.

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Hello,

Yes there is a tale tale sign that you have a blown fuse in the power supply or at least the components inside are not working in order.

A bad power supply would mean a dead TV. Now this does not mean you thorw the tv in the trash and forget it exists. You can purchase the power board itself from www.shopjimmy.com or www.partstore.com. I have seen many people repair these and know nothing about them for under $100 bucks. Not all results are guaranteed tho it will depend on your knowledge.

No stand by light, means no power is being delivered to the TV, Bad power supply or fuse.


I hope this was helpful,

Kind regards,

rulds2008

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/edwy_1a56970cf1ea4620

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Try some contact clean on the Vol- and Vol down contact switches,either the Vol- contact is dirty or it needs to be replaced. Mats Electronics has contact switches 1-800-628-1118
You could have a problem with Poor Solder Connections on Boards.

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Solid color vertical line? If it is, then the LCD panel is bad. It will get worst with more lines.
Please look at the picture in my LCD TV torubleshooting guide to see if that is what you are seeing.

Basic LCD monitor and TV troubleshooting guide:
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r7406380-tv_training_manuals
Failed TV and Monitors: http://s807.photobucket.com/albums/yy352/budm/

Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague

Capacitors kit: http://lcdalternatives.auctivacommerce.com/ he can make you a set of caps for you.
Or www.digikey.com just make sure to use caps with low ESR, 105c, high ripple current, long life rating such as PANASONIC FM or FC series.
Please leave rating if it helps.

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Are you sure you are pressing the Power button, and not the Home button?
derrickolz.jpeg

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IF THE MENU LOOKS CORRECT THEN IT WILL BE A MAIN BOARD FAILURE IF THE MENU LOOKS GOOD THEN IT COULD BE T-CON BOARD FAILURE. CHECK ALL CONNECTIONS BEFORE AND AFTER THE PARTS ARE REPLACED.

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between 6.3 and 7 amps should be fine. what board is the fuse on?

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Now ur tv LED power light indication on the front LCD panel flashes?Yes,than the power supply board is dead.That the board,where the power a/c cord plug into it.Tries websites like Shopjimmy.com,Ebay,com to buy a refurbish power supply board for the replacement.

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Redo it again lost power to tv,sometime loss Data save.Data dossn't dissapper only lost.

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The main board has become faulty. The logic in the TV is bad that is causing the TV to have such problems. The only way to fix is to replace the main board.

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Hi...

What are you using for cables to connect to the TV?
Can you try a different one?

Let me know

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return tv to retailer ?.

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The Wii will work on the TV. Just try plugging into the ports labeled AV1 or AV2. The red, yellow, and white holes should line in a row with AV1 and AV2. After you have them plugged in, press the INPUT button on the TV or the remote to get to the AV1 or AV2. It should work after that. :)

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This is a problem with either the processing board or the panel itself. If the set is only a few weeks old, you should be able to return it for an exchange. These things happen to these sets on occassion. Just request an exchange under warranty.

Dan

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Do you see a small audio jack next to rgb connector? hook your audio cable (3.5mm mini plug) to this. ought to do it. regards kindly, meder's tv

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