Question about Toshiba 36A40 36" TV

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Red Power Light Comes On, but nothing else.

Possible lightning hit. Automatic shutoff after 15 mins. still works. TV will not power up. Is there a reset anywhere? EXTREME sentimental value to TV. Want it fixed if at all possible.

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Re: Red Power Light Comes On, but nothing else.

Fuse inside if blowen will sometimes show a power lamp but no current to the tv

Posted on Sep 25, 2007

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Tda9380ps /n3/3/1664 using in sharp tv power supply ok ,but no EHT ,the power LED are glowing red light press program key to change green light to return in few miniutes to standby in red light position...

tda9380ps /n3/3/1664 using in sharp tv power supply ok ,but no EHT ,the power LED are glowing red light press program key to change green light to return in few miniutes to standby in red light

Aug 30, 2011 | Sharp 21" Multi System Stereo TV

1 Answer

This morning I tried to turn my RCA TV (model 24R411T) on and nothing happened. I tried plugging it into a different outlet, still nothing. I tried leaving it unplugged about 10 minutes and trying again,...


Power surges or nearby lightning strikes can destroy electronic equipment. However, most of the time, damage is minimal or at least easily repaired. With a direct hit, you may not recognize what is left of it!

Ideally, electronic equipment should be unplugged (both AC line and phone line!) during electrical storms if possible. Modern TVs, VCRs, microwave ovens, and even stereo equipment is particularly susceptible to lightning and surge damage because some parts of the circuitry are always alive and therefore have a connection to the AC line. Telephones, modems, and faxes are directly connected to the phone lines. Better designs include filtering and surge suppression components built in. With a near-miss, the only thing that may happen is for the internal fuse to blow or for the microcontroller to go bonkers and just require power cycling. There is no possible protection against a direct strike. However, devices with power switches that totally break the line connection are more robust since it takes much more voltage to jump the gap in the switch than to fry electronic parts. Monitors and TVs may also have their CRTs magnetized due to the electromagnetic fields associated with a lightning strike - similar but on a smaller scale to the EMP of a nuclear detonation.

Was the TV operating or on standby at the time? If it was switched off using an actual power switch (not a logic pushbutton or the remote control), then either a component in front of the switch has blown, the surge was enough to jump the gap between the switch contacts, or it was just a coincidence (yeh, right).

If the TV was operating or on standby or has no actual power switch, then a number of parts could be fried.

TVs usually have their own internal surge protection devices like MOVs (Metal Oxide Varistors) after the fuse. So it is possible that all that is wrong is that the line fuse has blown. Remove the cover (unplug it first!) and start at the line cord. If you find a blown fuse, remove it and measure across the in-board side of fuse holder and the other (should be the neutral) side of the line. The ohmmeter reading should be fairly high - well certainly not less than 100 ohms - in at least one direction. You may need to unplug the degaussing coil to get a reasonable reading as its resistance may be 25 or 30 ohms. If the reading is really low, there are other problems. If the resistance checks out, replace the fuse and try powering the TV. There will be 3 possibilities:

It will work fine, problem solved.

It will immediately blow the fuse. This means there is at least one component shorted - possibilities include an MOV, line rectifiers, main filter cap, regulator transistor, horizontal output transistor, etc. You will need to check with your ohmmeter for shorted semiconductors. Remove any that are suspect and see of the fuse now survives (use the series light bulb to cut your losses - see the section.

It will not work properly or appear dead. This could mean there are open fusable resistors other defective parts in the power supply or elsewhere. In this case further testing will be required and at some point you may need the schematic.

Jun 14, 2010 | RCA 27R411T 27" TV

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My Loewe Aconda TV will not turn on - buzzing noise.

My Loewe Aconda 81 HDR TV will not turn on. When I press the power button the green light comes on but the red light stays on with it and after a few seconds the green light goes out and the red light stays on. Any help please.

May 15, 2010 | Loewe Aconda ACO9383 38" TV

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I power on my Precision TV power light comes on but nothing shows

check the power supply
check the horizontal transistor

Jul 06, 2009 | Apex Digital PF2720 27" TV

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SONY KDF-E55A20 5 red blinking lights on power button

Symptom shows Lamp is weak in result and causing restart of TV again and again. Your TV requires new lamp as per following part number...
It is available in Sony Accessories Store for $200 and replacement procedure is written in instruction manual of TV.

Always buy Sony original lamp for TV and avoid aftermarket / cheap lamp for TV safety.

May 18, 2009 | Sony KV-36FV26 TV

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Mitsubishi DLP WD - 62525 TV not working

if the lamp led is on you need the lamp, also could be bad ballast

Aug 04, 2008 | Standard (CRT) Televisions

1 Answer

My tv is turn to red light when i hit the power button

Some circuit in secondary power has a leak or shorted parts need to replace it. thats why your tv comeback to red ligth signal. need a technician.

Jun 08, 2008 | Sharp 20K-S100 20" TV

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The red led would flash about 1 to 9 times, then stop's about 5 sec and restart.
There is nurmerous problem that may cause your ctv not to function, first commond porblem is power supply, second is defflection circuitry Vertical and horizontal, second is a bad solder connection very rarely, bad cap's is a factor or voltage regulator. You would have to get the schematic first to even try to think about troubleshooting. Lot's of technician or fedup with hight price for info's, all info should be free if compagny's like sony want's to help. There web site well it speak's for itself, not enough tech support. You can't call, there no one there or won't answer.
If you need the schematic I don't know how but maybe I can send you a link. First I would check for short circutry to see if you can solve it.


What about Bob
Timmins, Ontario

Jan 08, 2008 | Sony FD Trinitron WEGA KV-36FS120 36" TV

1 Answer

Tv power light comes on but that is it no sound no picture can you help me

Solder bad connects in power circuits....Check all power supply
voltages with meter, consult service manual........T.

Dec 12, 2007 | Toshiba CF36H40 TV

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