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Toshiba 32DT2U1 TV

No power and led light off powewr supply appears ok with all voltages as stated. caps good trplaced eeprom ic on av main board to no avail any thoughts?

Posted by Anonymous on

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

SOURCE: Vizio P42HDTV Power on Diagnosis

Please check the U29 8 pin little surface mount mosfet it has this letters > FDS4935 > > In this part inputs 13.2 volts which is ok for the near 12 vdc but it > outputs 1.250 vdc i am 100% sure that this is all the problem > > check it out, and tell me if you´re agree with me > > On this output pin it feeds the audio Ic, the 7809 and the tuner side board > which needs de 12vdc too and its getting only the 5vdc part > > what do ya think?? > > Richard

Posted on Apr 13, 2008

  • 195 Answers

SOURCE: olevia 437-s11

Most likely the CCFL inverter has been the problem all along....

Posted on Oct 10, 2009

BoiseLCD
  • 63 Answers

SOURCE: I have a NS-LCD37-09 tv. No picture or backlight

Your main board is faulty. I've done several of these but haven't been able to figure out which component is actually bad these yet. I've simply had to replace the board itself, and it fixes it every time. One thing you can do to get your backlights to come on (and so you know I'm not Jive'n you) Is unplug the three wire bundle that spans from power supply to main board. This will usually make the backlights fire up. I even had one that after I left it that way for a minute (with the backlight on) it suddenly started working again! But this was short lived. :-(
One time I even tried recapping the entire main to see it that would fix it. It did not. I think it might be something to do with the small chip labeled SL37HA37. It's a 16 legged bastard near the 3-wire plug I told you to pull. It's that or possibly the bigger IC near it that has a heat sink on it. The ball grid array solder joints may be faulty. Just guesses, if any smart guys out there figure this one out, be sure to tell the rest of us please!
Thanks, Chris Boise LCD www.boiselcd.com

Posted on Apr 23, 2010

futurework
  • 70 Answers

SOURCE: insignia ns-pdp50 plasma. pop of death, audio but no video

I suspect that your supply has gone bad. You will need to find the service manual for voltage measurements. If you want to get replacement boards many can be found on ebay or you can check www.shopjimmy.com they stock boards for many units and I have had no problems.

Posted on May 04, 2010

gopakumarg43
  • 74136 Answers

SOURCE: What is wrong with my TV? No picture but has sound. picture shows with flashlight.

Back - light problem. Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis. http://electronicshelponline.blogspot.com/ To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.

Posted on Jan 14, 2017

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I have an LG 47LN522-UB LED TV that stopped working after three years and need help diagnosing a problem with it.


Check and replace damaged component/s at its back-light inverter board, or replace this board as card basis. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. It will be best to replace the inverter board as card basis. http://electronicshelponline.blogspot.com/ To some model sets; especially LED back-lighted types; the back-light inverter circuit will be part of the main power supply board [SMPS]. In such cases, the power supply board might need replacement. To some models sets, the back-light inverter and SMPS section circuit will be integrated at its main board itself. If so; the main board should be replaced. To some models of sets, all these section circuit will be integrated at its main board. If this is the case, you have to replace the main board.

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Hi Ab7775,

1. Pl check st by 5 or 3.5 volts.

2. If it is ok, check power on 5 or 3.5 volts. Is power on voltage stable ? If this is pulsating with cliking sound, it is the main board. Otherwise it should be the power supply.

3. Please also check all the other voltage for short with ground.

You can also check the power supply board separately. Remove the connector going to main board. Put a 1k res between st by and power on pin. Plug in the ac, if all the voltage appear, your power supply is ok.

I am on line if possible please do this checking and let me know the result.

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Fault at its main digital 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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Hi, First check that you have good power coming in from plug.
If that is good check out power board (capacitors Bad) replace if oozing out or bulging out. If you are good with soldering then do so.
Replace with same capacitors or better ones.

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Vizio E320VL has yellow light but wont turn on even with a new Power Supply


The power supply get's it "turn on" signal from the main board. It is very likely you have a faulty main board. Do you have electronics experience??

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I have a JVC TV AV-21DTG2 the TV goes on protection mode as soon as I switch on the mains power


The power supply regulator section circuit has to be troubleshooted. There might be some shorted component/s. It is a skilled work. You must have sound knoledge in electronics to do this work.

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Check power supply to see if its working, check across main cap, Do not use chassis ground for 160v. If good, check for 130v on the collector of the horizontal output transistor, if missing voltage, check for either an open low value resistor in the power supply or an open pekoe fuse or a bad voltage reg ic.

Oct 31, 2011 | Toshiba 32A43 32" TV

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Power on for a few seconds then turn off


Tv is going into x-ray protection mode. Check power supply voltage, make sure it's not too high. 160v dc across main cap, do not use chassis ground, use cap ground. If too high, something is open. If too low, something is shorted in power supply. Check voltage regulator ic.

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1 Answer

I have toshiba tv which was working nearly 10 year without any problem but now tv is not working if we switch on it power supply to the tv is proper but tv is not working please come an see this...


Hi
Firstly and would remove all the leads from your TV and check them. .
WHAT I RALLY THINK IS THE PROBLEM IS THE PICTURE TUBE BURNT OUT IF YOU HEAR IT CLICK ON WHEN YOU HIT THE POWER BUTTON BUT YOU SEE NO PICTURE OR HEAR IT CLICK BACK OFF THEN YOUR PICTURE TUBE IS BURNT OUT

If it is still failing then there is a strong possibility that your Eeprom IC on your main AV Board is corrupt and needs replacing. This should only be attempted if you have good soldering skills as they are Surface mounted and very small.
My advise if your skills are not that good is just to replace the main AV board (Scart Board) these usually sell for around £50 but WILL solve your problem.

I have gone trough everything i know here that would cure the fault, most times one of the above three will cure this, but im afraid other times its just time for a new AV board.

Hope iv helped some people out here.
Any comments or thumbs up appreciated.

Nov 23, 2010 | Toshiba Televison & Video

1 Answer

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7 blink error is 8.6 volt error on that model. usually tied to y sustain board located on left side of set looking from back. disconnect y main from power supply and power on and if comes on verify power supply primary voltages located on label on pdp itself. if voltages present you would need to replace that board as not designed for component level repair. however if you find failed components like swollen caps or burnt ic's you could replace those. also when replacing the y main board there are two y buffer boards to left of main board that also would be recommended to be replaced at same time as they work as circuit and replacing one board without other could cause failure to other boards still in set

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