20 Most Recent Toshiba REGZA 42 in. Flat-Panel LCD HDTV - Page 10 Questions & Answers

Hello,


All plasma an lcd TVs 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 reseating the connection will fix it, if the ribbon cable has been nicked there could be a severed connection. They can sometimes be fixed, but it is a pain. An yes I have done it, and 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 if you decide to tinker with em, the usually have lift locks that release them, but it is very easy to wreck em.

Good luck.

what makes it not trun on

Let me know model number and brand of your tv to diagnose possible cause of problem.
Thanks.

Which specific model from Toshiba do you have? There are several 42" TVs released with the Regza name. Most of the manuals can be found on the Toshiba support web site. http://www.tacp.toshiba.com/customersupport/

The one that I have allows for the channels to be set from the On-Screen Menu. In the TV mode, press Menu (there is a Menu button on the side of the TV). Navigate with the arrow keys (CH+, CH-, Vol+, Vol-) to the Setup menu and highlight Installation and press Enter (the Menu button is also the Enter key when using the buttons on the TV). Then highlight Channel Program and then Start and press Enter. When the search is done, press Ch+ or Ch- to view a station. To add or delete channels, use the Channel Add/Delete that is one line below Channel Program. Use the enter key to change the check mark status next to a channel. If adding a digital sub-channel not previously found, enter the number manually on the remote using the 100 key to add the dash. If the channel isn't found, an error message will result.

I hope this helps.

Cindy Wells

The 2 long boards call the LCD inverter boards are dead.These 2 long inverter boards help the LCD screen to have backlight to produced a picture.These 2 long LCD inverter board are dead,must be replaced to get a picture again.Tries websites like Shopjimmy.com,Ebay.com to buy these 2 refurbishes long LCD inverter boards for the replacement.

It is either the backlight inverter is not getting the 24vdc from the power supply or the inverter board is bad. Look for bad components, short circuits, dark brown heat spots, fuses.
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

Let verify first to narrow down to where the problem can be. First, check the on screen sound set up menu to make sure the speakers are not set to OFF. If the setting is OK, then attach the powered PC speakers to the Audio Line out RCA jacks to see if you can get the sound there, if you do, then the problem can be in the power amp circuits, if you do not get the sound at RCA jacks, then the problem can be in the sound processor circuit. Please post back what you find.
Parts: www.shopjimmy.com
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
http://s807.photobucket.com/home/budm/allalbums

Try Mute button, onscreen audio set up to make sure it is not set to OFF.

http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide

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

I bought a 52" 1080p 52VR series for $100 dollars off of craigs, Half the screen would flicker at bright colors and then bam, solid lines on exactly half the screen. About three hours later I have a new regza running like a charm. The issue is and I quote "Toshiba, Samsung, Vizo are all ****, they don't have fans and burn out or they have surges from outlets". Removing the back and pointing the fan the modules it delayed the amount of time before flicker occured and was able to pin point which board it was by unpluggin one by one from connection, (psu was working fine) until I came to the T-com board covered by foil on top. I've done wonders with my heat gun (Props to Microsoft and HP as your shortcuts deflected excuses, horrible offshore service, and short warranties made me small fortune on xbox's and dv9000's alone.) ((to Schanoop at microsoft, keep laughing your kids college fund was spent on sweatpants for the homeless)), my 1257 revived and resold laptops and 360's and now 3 flat's all from my "19.95" husky heat gun. Back to the point.

The corners cut today are fans and leaded solder that won't crack or melt. hairlines cause catastrophic problems. I removed the T-con panel (you tube this before you try it and watch it done first) placed chip and pin side up on a marble surface using four 1/4 bolts placed under each fastner slot. yet agian you tube red ring fix with heat gun, but in circular motions heat the points of contact on the board (where chips and connectors meet SF objects, and for about 2 and half minutes heat the cheap solder up to let it reform. Gravity itself will take care of the rest as with the chip facing up (connectors as well) it will sink back fixing any cracks or broken connections. Most improtant, don't touch it, let it fix itself by giving it 45 minute minimum cool down. and thats how I got a 3 thousand dollar TV for one hundred dollars.


Just incase you have the same problem and this didn't fix it, these are the other things I did with the board off. Remove the foil from t-con shield, (i tossed it) and where the ribbons meet the lcd itself, I noticed the distribution boards have small pegs to sit in for fit and restriction. However I'm guessing do to poor ventalation, these boards were warped and refused to stay flat and would pop up and off the pegs. Using tweezers I held them on the pegs and used a buffing wheel off my dremel as a pad to put pressure between the metal frame and the board so it was forced to stay flat and on the peg. second thing I did was handle my t-con (aside from the points it's a tough little board) like an unwanted cat as fell off the tv onto hardwood, I used a 48 watt solder to touch the tips up and accidently solder a SFC to an open circut, couldn't even see the damn switch without a 10x loop, I used a desolder gun to fix the intermitten issue. I am positive however that the problem lied in the solder they use to save costs as it melts at low heat, and when your pushing technology thats running twice as hot because the numbers are bigger make for unique opps for my heat gun. I'll work on a shorter version but after reinstalling, I threw a cpu fan above the t-con and it's been smooth sailing.

Remove the batteries, un-screw the back cover of your remote, you'll find a circuit board take that off, clean the other side of that board (the one painted green) with a cotton slighty wet with rubbing alcohol as well as the black carbon on your remote pad, let it dry put it back together replace with a new battery, I guess this'll work

make sure you are using component or hdmi cables, anything less will not be HD. also check your video output settings on the Xbox and make sure its set for 1080 or 720

go to menu put it on dtv scan channels/if not its aerial

If really the screen is damaged (not not just the covering glass), you most probably won't be able to get a new screen. Maybe buying some other TV of the same model... Otherwise only service can order the screen and replace it.. But screens are the most expensive part of LCD TV, so it probably won't be good option.
In any way, get the TV to the service for look and price estimation. Then decide if you want to repair it or buy a new model.

Sounds like a panel gone bad (LCD panel) Any warranty on it? Usually not repairable...cost more to repair than replace. Also possible it is the T-CON board...the board just before the panel. Get a tech to have a look at it. One is fixable, the other is not.

Your tv's power supply needs to removed and checked for bad caps and/or component solder joint breaks.

You can also look for refurb power supplies if you wish to forgo having the current board fixed.

I have purchased them online for computer lcd's. They are pricey for computers but for TV's they would be worth it since TV's are still up there in price.

Good luck and be careful!

I have the same problem. You need a new audio/video board.
Here is how mine sounds:
http://www.youtube.com/watch?v=yAXqWIhQYa4

Hi jkordoski
To answer your question;
The burn-in symptoms are when you see an actual pattern or picture of say a video game that has a static image or always the same pattern in some area, then it can get burned into the lcd panel.
That is why many companies now have screen savers feature on their tv`s.
The problem you are having is most likely caused by the lcd controller board, also called "T-con" and in some cases the lcd panel itself.
If you want to open it and take a look let me know and i`ll help you along.

if there r glass on screen then u sholud clean the screen by kirosin ( soil oil)

Go in ur tv menu go "Picture"go down to reset.Press it,will go back to Factory setting.The colors should be back to factory setting.Not,than ur tv Main Tuner signal board is the cause must change to fix.

Check the Fuse in the Plug

Unscrew the back of the TV and check the fuse inside

Use a Multimeter and check for voltage on the Switch Mode Power Supply.It's normally a plug just next to the fuse.