20 Most Recent Toshiba 50HP66 50 in. Plasma Television - Page 3 Questions & Answers

Try to unplug set and or a box if used from power for a while, plug both back and see if a reboot that will happen helps or not.

A case of which came first the chicken or the egg, Power supply board may be the issue or the sustain board--have you looked for the usual bad caps on the power board?

Problem with a Plasma is it can be:Power supply issue in set.Almost any board pulling voltages down.Main signal board that controls everything bad.worst case is display panel (entire front screen unit) bad.Best advice is get it to a shop and get an estimate.

The boards wont match. Visit the site named 'Electro-help' for more details. Click this link. View it in "Timeslide" or "Flipcard" option, which can be selected from the drop down box menu by the [Sidebar] tag, at the top left corner of the display window. You can also click the [Home] tab to see the latest updates. It will make search easy. There are more than 1350 posts to different brand TVs now. Pull up older posts there.

Change input device to some other like a DVD player and see.Switch off TV, switch off power, remove plug and wait for 48 hours and retry.If problem persists, call in a qualified service technician.

There is a input selection switching IC at the input section circuit. It t damaged. Seek experienced service tech: assistance.

ISSUES: 1. IF sound main fuse/s are good.2. If no power or standby check main fuse, standby power supply and any signsof damage you can see---burnt parts etc.3. almost all these sets the troubleshooting involves checking voltages on the main power board to narrow down theproblem.4. Be safe and if you do not know what you are doing don't open the set.Answers to issues:1. RE:fuses---if a blown fuse is found get a good replacement(not the genericones like Radio Shack). Many fuses are special even aside from amperage--Don'tput a higher rated amperage fuse in the set for any reason.2. RE: power supply in set: if total dead aside from main fuse the set uses astandby power supply that runs 7/24 and a main supply (some are combined andsome not.Here aside from checking fuses you want to examine all the filter caps on thepower/standby to see if any are puffed up or buldged up in some fashion--Iattach a photo of a good one---top should be silver metal and PERFECTLY flatand have no brown material coming out on top or bottom.What happens in the standby area is they use caps with too low a voltage rating(saves money) which causes them to fail in a year or two---the standby runs7/24 and the heat dries out the caps and they fail.3. Trouble shooting consists of the above and then at some point you have to buyand try a board to see if it fixes it or not.4. Safety first--no TV set is worth getting injured or even killed over.If set is opened at least look for puffed up and bad caps like in thisphoto.

I see so many here with no sound/nopicture issues:ISSUES: 1. IF sound main fuse/s are good.2. If no power or standby check main fuse, standby power supply and any signsof damage you can see---burnt parts etc.3. almost all these sets the troubleshooting involves checking voltages on the main power board to narrow down theproblem.4. Be safe and if you do not know what you are doing don't open the set.Answers to issues:1. RE:fuses---if a blown fuse is found get a good replacement(not the genericones like Radio Shack). Many fuses are special even aside from amperage--Don'tput a higher rated amperage fuse in the set for any reason.2. RE: power supply in set: if total dead aside from main fuse the set uses astandby power supply that runs 7/24 and a main supply (some are combined andsome not.Here aside from checking fuses you want to examine all the filter caps on thepower/standby to see if any are puffed up or buldged up in some fashion--Iattach a photo of a good one---top should be silver metal and PERFECTLY flatand have no brown material coming out on top or bottom.What happens in the standby area is they use caps with too low a voltage rating(saves money) which causes them to fail in a year or two---the standby runs7/24 and the heat dries out the caps and they fail.3. Trouble shooting consists of the above and then at some point you have to buyand try a board to see if it fixes it or not.4. Safety first--no TV set is worth getting injured or even killed over.If set is opened at least look for puffed up and bad caps like in thisphoto.

Check to see if your SAP is turned on. If not, see if you have the same issue on all inputs. If you do then the problem is either a shorted speaker or a bad main board.

Have you tried to unplug set for a while and turn back on?If that does not help contact Toshiba to see if common problem on this model and if any possible software upgrade is available for this problem.If still no luck someone will have to examine it and decide which board is causing this and replace it.

Hi thereIf it is the power supply connect another object/a radio to he same as your tv is if the radio behaves like the tv it is likely the power.You can also check if the Auto sleep featured is activated in the Time settings. Refer to the "SleepTimer".And if there is no signal on the tv it will turn off automatiacally after ca15 minutes of inactivity.good luckkolbrun

TRY REPLACING THE POWER BOARD

There is a high possibility that the components over a period of heating and cooling, tend to bring on a problem of dry soldering. So my advice is to check the set for some loose joints that have played on to give you these erratic shut downs or poor performance. The best way to check for loose connections is to tap lightly when the set is powered on, if there is change while tapping then it seems that there are DRY solder joints. Remove main plug, the covers - with caution of high voltage, check for dry joints, and use a good soldering iron to solder all suspected points. Sometimes the fault occurs when the set warms up; if so you can simulate the heat using a hair dryer on the suspected areas, try with the power supply, distribution, Processor controller, driver controllers on the A/V related sections. Also the use a FREEZE-IT spray can simulate the components to cool and show up the fault. It can also be related to WEAK ELECTROLYTIC capacitors as the value can reduce in time. Based on the above method you must be able to locate the area of fault and solder the sections.

I'm sorry that the TV is not displaying any picture on the screen. Please follow the troubleshooting steps and check the operation:

• Please make sure that the connections are secure and proper.
• Try connecting a different video source like DVD player or VCR and check the operation. If it works with another device, the issue might be with the input device currently.
• Also try connecting the device to a different port in the TV if no other devices are available.
• If the issue persists, try with a different cable.
• Perform a power resetting and check the operation. To perform the power resetting, unplug the TV from wall outlet for more than 2 minutes and then reconnect it.

If the issue persists, after all above troubleshooting steps, service may be required. You can click hear to setup a service for the TV.


Thanks for understanding. Please let me know if you require further assistance in repairing the TV yourself. (Only if you have previous hands on board level experiencing in electronics as it has safety issues)

Good day!!

That problem is cause of faulty inverter board...

Inverter board is the responsible for the back-light so if your TV is no back-light that could be the problem...

Please try to replace it to fix your problem..

Thanks for using fixya...and don't forget to rate my answer

check first audio setting if nothing check the speaker

I believe that if you transport your television safely using bubble paper and rope with some caution to its corner you will get the desired result