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Toshiba 19BL502B wont switch on

Theres no power at all. Ive changed the fuse in the plug and put new batteries in the Remote. There is no standby light or power on light

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Hi there,
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Posted on Jan 02, 2017

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SOURCE: Hitach lcd tv dead, no standby light. Power board Vestel 17pw26-1 v4 no signs of burnout/swolen caps.

You can pick up a cheap multimeter at radio shack, or Harbor Freight (if one is in your town). Or of you know someone who has a multimeter you could borrow, that would be even better. You will want to set your meter to ac volts, and check for 110vac across the input terminal on the power supply board. I'm willing to bet you have a dead power supply.

Posted on Dec 09, 2012

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1 Answer

Ive just bought a 22 inch lg tv, tuned in ok but remote is now not working, wont do anything, wont even put tv in standby mode. Any ideas?


unplug tv, take batteries out of remote. plug tv back in, replace batteries. best idea i have. sometimes that resets the devices. good luck

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Fault with its main board. Short circuited component/s at it. Contact any service technician; or the authorized service center. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. http://electronicshelponline.blogspot.com/ . In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.

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Toshiba 19BL502B wont switch on


On the main power board inside the TV there are fuses take a look at them and the transformer and capacitors for damage

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1 Answer

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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.6_3_2012_1_48_15_pm.jpg6_3_2012_1_48_47_pm.jpg

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1 Answer

Laptop stays in standby and wont switch on


Remove main battery and press power, no change! sub out one stick of ram try again, repeat with the second one, Check to make sure the power adapter putting out the proper voltage, after this I recommend a professional to assess.

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Hi , ive got a murrey sentinal ride on mower, with the 15.5 hp briggs and strat motor, it has been in storage for awhile and now wont start , it wont do anything actually , ive put a new battery in it and...


Hello, it sounds like you have a brake switch or pto switch that is not working, or needs to be set.

Hope this helps

If you need further help, I’m available over the phone at https://www.6ya.com/expert/matt_8dbc24bf722649ac

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1 Answer

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Generally the power button has to be on first to put the TV in standby mode. If you cant do this no remote can ever work. Remotes are not capable of turning on a set that has no power mechanically turned off. and that is what the master switch does. once that standby light is off it is not live and consuming power and not under the control of a remote anymore

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2 Answers

Wont come on


Instead of just unplugging the TV, perform a power drain:
1. Unplug the product's power cable so the device is not grounded to the house. 2. Press and HOLD the product's own power button for 1 minute to drain the capacitors. 3. Plug the product back into a wall outlet and try to turn it on.
Note: This procedure works with battery operated devices as well so remove the batteries and hold down it's power button.  Electricity can remain in capacitors and on circuit boards enough to prevent normal functionality. By clearing the residue electricity, your product will have a fresh start and many times this will resolve a buggy or non-responsive device that appears to be dead.
If the TV still won't turn on, then it appears something is wrong with it's mainboard since the TV is still receiving power because the standby light is still coming on.  The cost of fixing an older TV's mainboard could be costly or impossible if the part is discontinued.

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