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POWER FAILURE I HAVE A TOSHIBA LCD TV AND GOT BURNED THE IC AND FUSE,EVEN CHANGING A NEW ONE,CANNOT BE POWER ON.WHAT COULD BE THE PROBLEM?CAN IT BE FIX?THANKS.

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You must look around for the reson of this burning look for burnt resisttor--explosive capacitor-----short circuit capacitors----short of winding in pulse transformer-----circuit diagram will be helpful.

Posted on Aug 09, 2008

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Toshiba 37E200U LCD television


T5.0AH 250V used in this TV is a ceramic fuse Time delayed (Slow-Blow) and the dimensions are probably: 5 mm (3/16 in) x 20 mm (3/4 in). You just measure the old one.

Regards GJ

Jun 20, 2014 | Toshiba 37E200U 37 in TV

1 Answer

Power supply card PLHL-T722A, 2300KEG033A-F, had a blown fuse F101 (T1AH250VP). Replaced fuse with T1AL250V. Plugged tv into wall, and resistor R5 lit up and started smoking. Thus pulled plug out...


We sell a repair kit for this board, which has the fuse, resistor and the IC that usually fails along with them.

You can find it at http://www.coppelltvrepair.com .

I've seen that board fail in at least three different ways, though, and this is the least bothersome of them.

We offer a repair service and have about 90% success even with burned boards. You don't pay any service fees if we can't fix the board.

Finally, when available we also sell boards ready for use with a trade-in option. That ends up a little more costly than a repair, though.

Sep 03, 2013 | Philips 47PFL3603D LCD TV

2 Answers

46RV535U 46 in. HDTV LCD TV where is the fuse


There are several fuses on the power supply board.

Usually the one that fails is not the main AC line fuse (which is close to the AC line input), but the PFC fuse located, you guessed it, next to the PFC regulator IC on the board.

When the PFC fuse is blown (measuring open) you also need to replace the PFC IC and possibly other components on the board. Most of the time the PFC is sufficient though.

Here's a link for repair service for the board:
http://www.coppelltvrepair.com/p/751/toshiba-46rv535u-power-supply-board-repair-service-for-dead-refusing-to-power-tv-or-faint-display-problem

Also search there for the TV model, we may have repair kits or exchange services available!

Hope this helps!

Jul 30, 2012 | Toshiba Regza 46RV535U 46 in. LCD HDTV

2 Answers

No picture or sound


The 42RV530U is known to develop problems in both the power board and the main board. You can check out a power board repair service at
http://www.coppelltvrepair.com/p/442/repair-service-for-toshiba-42rv530u-power-board-75010942-dead-tv-or-clicking-on-and-off-problem
and you can also search for 42RV530U at http://blog.coppelltvrepair.com.
Hope this helps.

Jan 04, 2012 | Toshiba Regza 46RV535U 46 in. LCD HDTV

1 Answer

I have been trying to turn on my Toshiba 55HT1U television, but it will not come on. I get a little green power light but the screen is still black.


Hello, Thomas!
Looks, like there is an issue with inverter or inverters power supply(24v).
first thing to do: poke your set open, get to inverter make sure it has +24v in a main fuse. If so, in most cases: check fuse for continuity. Must have a multimeter to do that. Some LCD panels have 2 inverters: Master and slave. Known for frequent failure. Easy to determine: usually, on board IC chip bursts on failure. Or, if you really lucky: you may see "bloated" capacitors on those boards, as well on your power supply. I'd start with power supply, then check inverter(s). Good luck!
Thanks,
Alex.

Dec 20, 2011 | Toshiba Televison & Video

1 Answer

Laptop wont turn on, got green pwr and amb bat but will not fire up


Systems covered: All failing to boot without lighting up display.

Goal of this Solution: Try to determine whether system is (a) booting successfully while failing to light its display (indicating hardware failure in the display), or (b) failing to light the display due to failure to successfully transfer control to ROM BIOS (indicating a motherboard failure).

The fact that the Green power LED, and Amber Battery LED are lit seems to exonerate the laptop power supply (brick) circuitry. Even with a nearly dead battery, a Toshiba Satellite 1135-s1552 should work while plugged into a properly functioning brick.

Here's Toshiba support's (244 page) online PDF version of your laptop manual:
http://www.csd.toshiba.com/cgi-bin/tais/support/jsp/modelContent.jsp?ct=SB&os=&category=&moid=434997&rpn=PS113U&modelFilter=1135-S1552&selCategory=2756709&selFamily=1073768663

If the HDD (hard disk) activity indicator LED is active after power-on, then your system has actually got past BIOS and is booting - your LCD monitor inverter circuit or Backlight may have burned out - and to use the system, you'll need to connect an external monitor to the RGB monitor port on the back of the system (see illustration on page 32 of User's Guide) to view system activity.
Alternatively, one may attach an analog TV, using the S-Video port on the back of the laptop (see illustration on page 32 of User's Guide).

Once an external monitor is working to display the ROM BIOS part of the boot sequence, you may find that the ROM BIOS is good enough to run a few BIOS-based diagnostics. Run them all - something may indicate the source of the boot failure. Ofttimes, enough of the motherboard remains good to provide interaction with the ROM BIOS, but some motherboard failure will subvert a full boot to Windows/Linux. An example of this type of failure would be a failure of the PCMCIA bus controller, which is vital for booting a disk-resident OS, but unaccessed (except by BIOS diags) when the user interacts with BIOS. Another common failure of this type is main memory (RAM) failure.
A working external monitor/TV also provides a chance to backup important laptop data to a flash drive, sky drive, or CD-RW discs.

If no HDD activity is seen after power-up, then either your BIOS is hosed (in which case you'll need a new motherboard), or another motherboard component is hosed (in which case you'll need a new motherboard).

You may want to transplant the HDD into a working PCMCIA-bus system (any laptop) to recover/backup your important data.
If someone recently attempted and failed to update the motherboard's ROM BIOS, then you know why the system is failing to boot and also failing to light the display.
Here's a link to a site with disassembly instructions for Toshiba laptops:
http://www.irisvista.com/

Most dead laptops (even those whose power supplies have been burned out by a nearby lightning strike with the system on 120 VAC power) will still have perfectly usable HDD module(s), and RAM memory cards, so that at the very least, these removable components may be recycled into memory reserves for your next laptop or sold (Ebay.com) to help defray the cost of a new system.

Dec 14, 2011 | Toshiba Satellite Computers & Internet

1 Answer

I have a Toshiba 26AV502R tv, was working yesterday and now it won't turn on? It's about a year old. What do I do to fix this?


the only thing you can try to do: unplug TV, let it "reset" for a minute or so, then plug it back in. If that won't help, means: surrender to repair service. for 1 year, even with 24/7 usage, there is a slim chance for "bloated" capacitors inside of TV's power supply, but quite a good chance of your main board failure. Now a days they quite compact, packed with high temperature producing IC chips, led-free solder, which has drawback of "fatigue" failure. Or, there might be power surge involved. In any case, except "lock up", appeal to TV repair service.
good luck,
Alex's Television,
215-806-5980.

Jul 16, 2011 | Toshiba 26AV502R 26 in. LCD HDTV

1 Answer

I'm not getting any audio whatsoever - whether it be the TV's own speakers or my headphones. Suggestions? Thanks.


Possible failure of the output IC in the Tv's audio section.
First of all open and check for possible failure of the main power supply to the output IC, Check if the series fuse/fusible resistor has opened, if after replacing the same issues come up then it is confirmed that the IC is defective.
If power comes to IC then check on the bias resistors around the IC or the feedback loop,-- capacitors in this section.

Aug 28, 2010 | Sharp LC19SB27UT LCD TV

2 Answers

Toshiba 57H81, power to transformer and flyback.


IF YOU REPLACED THE SAME PICO FUSE, YOU PROBABLY HAVE A BAD CONVERGENCE IC AGAIN . DID YOY SNUG UP THE IC TO THE HEAT SINK AND USE THERMAL HEAT COMPOUND ON THE NEW IC'S? ALSO CHECK SOLDER CONNECTIONS TO C810 AND C809 THE FUSE BY THE CAPACITORS MAY BE OPEN.

Jan 22, 2009 | Toshiba 57H81 57" Rear Projection...

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