20 Most Recent Toshiba 32AV502R LCD TV - Page 4 Questions & Answers


The problem of your tv is the main power supply. The power supply is producing dc voltage but not enough to transfer to other necessary parts of your tv. If you open the back cover of your tv you will see the main power supply, your ac cord is connected their so be sure to unplug it first to your main ac supply. Then try to observe or look for bulged up in the top of the capacitor try to compare it to other capacitor if you see that capacitor try to replace it and observe the polarity.

Toshiba 32AV502R... | Answered on Jul 08, 2011


Hello,

All Plasma and LCD TV have boards that control vertical and horizontal output to their respective areas. They are connected to the screen by ribbon cables. If one of these boards fails all together, has a failed chip, a bad connection, or a bad ground somewhere it will result in a black line in the area of that board. A bad ribbon cable connection on the bottom will result in a vertical black bar though the screen. Many times resetting the connection will fix it, if the ribbon cable has been nicked there could be a severed connection. They an sometimes be fixed, but it is a pain. An yes I have done it, but the bar is gone. The same will happen if the chip that outputs to that area opens. The connectors are the first place to look paying close attention to the cable, they are extremely delicate so great care must be taken
Good luck in solving the problem.

Toshiba 32AV502R... | Answered on Jun 10, 2011


It may have bad power supply due to bad caps, or it detects shorted circuits so it goes into shutdown to protect itself from further damage, you need to do an in-depth troubleshooting.

If you are going to DIY and have proper tools, electronics knowledge, and know safety precaution then please read on:

Basic LCD monitor and TV troubleshooting guide:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
http://www.fixya.com/support/r7406380-tv_training_manuals
Failed TV and Monitors pictures: http://s807.photobucket.com/albums/yy352/budm
Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague
Parts: www.shopjimmy.com
Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx he can make you a set of caps.
Or www.digikey.com, just make sure to use caps with low ESR, 105c, high ripple current and long life rating such as PANASONIC FM or FC series.

Toshiba 32AV502R... | Answered on May 15, 2011


i cant get anolog and digital channels on my tv i dont have a manual

Toshiba 32AV502R... | Answered on Apr 10, 2011


If you have a cable box or satellite tv receiver connected to this television, and you are using the cable company/satellite tv company remote control the captions are not coming from your television. They are not controlled by your television or your television's remote. There is usually a hidden menu where captions can be enabled and disabled. You reach it by turning off your cable box and then immediately pressing the menu button. If your cable box/satellite tv receiver does not work this way the company can troubleshoot/walk you through removing the captions. If they cannot request to speak to a supervisor.

If this does not apply to you because you don't have a cable box or satellite tv receiver then there is usually a closed caption button on your remote control even if it is under a hidden fla or there is a closed caption option in the television's setup menu that can also be accessed with the television's remote control.

Toshiba 32AV502R... | Answered on Mar 29, 2011


In general this happens when it has problem in the feeding source they can that there are a few blown or burst filters

Toshiba 32AV502R... | Answered on Mar 17, 2011


Same here. I'm 3/3 on toshiba TVs junking out, and this will be my last. I make purchasing decisions on electronics at work and I've pretty much had enough of Toshiba.

Toshiba 32AV502R... | Answered on Mar 17, 2011


Hi there,
An inverter board is an electronic circuit which boosts a low voltage DC current in to high voltage. It's used to power a CCFL tube in he television, which enables the backlight. The inverter, is composed of a MOSFET transistor, acting as a switch, an a coil, which boosts the voltage. The common high voltage output of the inverter board is around 800V.
If your inverter board has gone bad, you could replace the transistor and the coil in the board. This method is the cheapest option, but involves a lot of soldering and time. I encourage you to replace the whole inverter circuit, which is far easier, and not so much expensive.
You will have to take apart the television. Unplug the TV from the power outlet-wait around 8 hours to give time to the capacitor to discharge. Unscrew all the bolts of the back panel, and then, with a plastic tool-like a credit card- pull the back of the screen. After that, you will be able to see the circuit board of the TV. Localize the inverter board, it should be identical to this:
http://thumbs1.ebaystatic.com/m/mYnvyfIEorz5TT9qxKTuKzw/140.jpg
Then unplug the BUS cable and every CCFL tube connectors carefully-they are easily identified with a pink and a white cable. Afterwards, unscrew the fixing bolts of the board, and change it for the new one. You can buy a new one from ebay:
http://shop.ebay.com/?_from=R40&_trksid=p5197.m570.l1313&_nkw=32AV502R+inverter&_sacat=See-All-Categories
All you have to do now, is to reverse your steps. Connect each CCFL tube, put the back of the television on, screw the bolts and you are done.

Toshiba 32AV502R... | Answered on Feb 25, 2011


First, look at the screen in darkened room to see if you can see any slight glow from the screen, if it does, then the problem can be the T-CON (not getting the 12vdc) or the main logic board not feeding the signals to the T-CON board.
if not, next place to check will be the power supply module, make sure it has 24vdc which is required by the backlight inverter to work, the reason for not having 24vdc can be from bad DC filter caps (leaking/bulging top, high ESR) or short circuits in the inverter board which will cause the 24vdc supply to go into shutdown mode, so you may have to disconnect the power cable that feed the inverter board to see if the 24vdc will work without the inverter board hookup, you will need to apply about 3~4 amp of load to the 24vdc to make sure it can handle that. There are fuses on the backlight inverter boards also. So there is some troubleshooting you will have to do to find out the causes of the problem you are having.

If you are going to DIY and have proper tools, electronics knowledge, and know safety precaution then please read on:

Basic LCD monitor and TV troubleshooting guide:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://www.fixya.com/support/r6150077-basic_lcd_monitors_troubleshooting
Failed TV and Monitors: http://s807.photobucket.com/albums/yy352/budm
Learn about bad caps: http://en.wikipedia.org/wiki/Capacitor_plague
Parts: www.shopjimmy.com
Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx he can make you a set of caps.
Or www.digikey.com, just make sure to use caps with low ESR, 105c, high ripple current and long life rating such as PANASONIC FM or FC series.
Please post back what you find.

Toshiba 32AV502R... | Answered on Jan 25, 2011


Your back lite lamps are not lighting, sounds like your high voltage power supply is kaput. check out this You Tube video http://www.youtube.com/watch?v=6XoF6QZ1dmw

Toshiba 32AV502R... | Answered on Jan 02, 2011


Depending on where you live, like my place, there are a number of missing channels.
You could always browse the OnDIgital web site and find out what channels are available in your area.

Toshiba 32AV502R... | Answered on Dec 23, 2010


The power supply board is the problems and the causes.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.

Toshiba 32AV502R... | Answered on Nov 21, 2010


Hi
the problem you are describing seems to come from the screen panel your tv is a Samsung made and a very common problem so I would suggest you contact Toshiba even
if its out of waranty.
good luck

Toshiba 32AV502R... | Answered on Sep 27, 2010


Hi,

You can download and print the complete instruction manual in PDF format by clicking this link.

Please note: Adobe PDF Reader is required to view this manual. To download the latest version of Adobe Reader, click here

Hope this solves your problem. Thanks for using FixYa.

Toshiba 32AV502R... | Answered on Sep 07, 2010


Hi


Thanks for using FixYa. From what you have described it seems the issue is with the power board or the main board and we’ll need to check few things. When you open the unit up; take a look at the power board-the board where the power cords/plugs goes into. You might see some filter capacitors a little bulged up in the top-If this is the case-this is your defective part(you can try to replace them-but some soldering equipment is needed). If not, then probably the main board has gone bad. This is the other board-where all the inputs are going into. All this is only recommended if you have electrical expertise and know how to solder/re-solder components. Please note that the TV components consists high voltages even when in off position. Please do accept the solution if the issue is resolved or post a comment for further assistance.



Thanks
Rylee

Toshiba 32AV502R... | Answered on Aug 08, 2010


No,problems u discribing the LCD screen panel some how it shorted and dead.Replacing the LCD screen panel is not an option,because LCD screen panel are 90% of the tv,so replacing it.LCD screen panel will cost the same as a new tv,because LCD screen panel are limited produced by the tv corporations.It time to buy a new tv.

Toshiba 32AV502R... | Answered on Jul 31, 2010


First, look at the screen in darkened room to see if you can see any slight glow from the screen, if it does, then the problem can be the T-CON (not getting the 12vdc) or the main logic board not feeding the signals to the T-CON board.
if not, next place to check will be the power supply module, make sure it has 24vdc which is required by the backlight inverter to work, the reason for not having 24vdc can be from bad DC filter caps (leaking/bulging top, high ESR) or short circuits in the inverter board which will cause the 24vdc supply to go into shutdown mode, so you may have to disconnect the power cable that feed the inverter board to see if the 24vdc will work without the inverter board hookup, you will need to apply about 3~4 amp of load to the 24vdc to make sure it can handle that. There are fuses on the backlight inverter boards also. So there are some troubleshoot you will have to do to find out the causes of the problem you are having.

If you are going to DIY and have proper tools, electronics knowledge, and know safety precaution then please read on:

Please see my basic troubleshooting guide here:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide

http://s807.photobucket.com/home/budm/allalbums

http://en.wikipedia.org/wiki/Capacitor_plague

Parts: www.shopjimmy.com
Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx

Please post back what you find.

Toshiba 32AV502R... | Answered on Jul 31, 2010

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