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Electrohome model 20e410 completly dead, no power on fuse is ok pnp in power supply is ok All solders points seem ok. What next? Thanks

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If the main fuse still good, next step should be to measure the secondary voltages and low voltage as well, check the HOT transistor. If the HOT test OK, and voltages seems to be measuring good; there could be a defective FBT on your TV.

Let me know if you need further assistance.

Posted on Oct 03, 2008

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Got schematics for the TV ?

Posted on Oct 03, 2008

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The problem must be on the mother board chips

Posted on Oct 03, 2008

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Kenwood a91 amp lights up when switched on but audio out puts seem completly dead inc headphones.. mains fuses all ok any advice


Hi:
You directed this question at me, but unfortunately this isn't my expertise and I am unable to provide you with a real solution at this time.

Hopefully one of other experts will be able to provide you with a real solution.

Thank you for using FixYa

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Hi William,

If your problem is a continuous green blinking led light and will not turn on, this is an indication that the DM of your unit try but hasn't booted up and stuck to this fault.
If you have checked fine the fuses on the DM power supply board, you have to check/replaced also the electrolytic capacitors on that board.

11_1_2011_12_36_04_am.jpg

www.tvrepairkits.com has a repair kit for your unit (DM power supply board) that includes these parts.

If you've already replaced the capacitors on that board but still the symptoms still persist, I would advice you to check/replaced the capacitors on the power supply board feeding the DM power supply board. Check also the pico fuses and bad solder joints (cracked, cold, dried solder). Resolder the joints that look suspicious.
Yes, your model has no complete schematic diagram downloadable online. I have a copy of the repair manual that includes the schematic but not a complete one. The power supply's schematic shows only the major parts and the output voltages of the board. Same as on the DM's power supply.
Email me at jimvincentvillanueva@yahoo.com, I will send you the copy of the repair manual.
Jdvillanueva

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1 Answer

My hitachi plasma tv model 42PD5000 wont turn on.the red light by the switch wont turn on either.i have checked fuse on plug which is ok.please advise what may be the problem. Thanks Roberto


Hey,

A common problem for these is bad capacitors in the power supply, Remove the back from your TV and look at the power supply on the left hand side.

You will see roughly around 9 x capacitors that are bulged / domed shaped on top usually these are valued at 3300uf 10V any that have bulged or leaked a brown like substance should be changed.
This will cure the problem as they overheat being sat next to a heatsink that gets very hot!
Try and change them for the same 3300uf but a higher voltage.if otherwise, the power supply board is dead, u know basic electronics' and soldering? Most of the times, the power supply board just have dead leakages gases capacitors.These capacitors always bulges up on it top,or puff up on it top.Replaced these gases leakages capacitors will get your TV power stable,and work again.Or tries websites like Shopjimmy.com,Ebay.com to buy a whole refurbish power supply board for the replacement.

Hope this will help to fix the problem and do take care in handling the problem.....

May 26, 2011 | Hitachi 42HDS69 42 in. Plasma Television

2 Answers

Tv light flashed and cut off . turned back on and green light turned red and blinked 6 times pause then 6 blinks etc... tv will not power on. checked lamp seems to be ok. checked power supply board and...


Hello,

Your power supply board is not yet dead, u know basic electronics' and soldering? You have to open the back cover of the television check for dry soldering on the printed circuit board , if found resolder but if not Most of the times, the power supply board just have dead leakages gases capacitors.These capacitors always bulges up on it top,or puff up on it top.Replaced these gases leakages capacitors will get your TV power stable,and work again.Or tries websites like Shopjimmy.com,Ebay.com to buy a whole refurbish power supply board for the replacement.

I hope this will help in solving the problem...

Nov 29, 2010 | Televison & Video

2 Answers

I have a 50 inch lcd phillips tv. I turned it on this morning and it just keeps clicking . I can't turn it off I had to unplug it.


Hi,

This Seems to be a Power Supply Boards.Phillips TV's are Popular for their Power Supply problems.

You need to Open the TV. Make sure it would be Unplugged. You need to Take all the Precautions. Locate the Power Supply Board. Remove the Connectors and Pull out the Board. Once you Pull out the Board, with the Help of Magnifying Glass, locate Cold Solder Joint. If Everything is OK, then you would Locate Bulged / Leaked / Swelled Caps. They would have Ammonia kind of Odor. You need to De-Solder them. You could take the same to Radio Shack / Fry's / Order Online. Once you get the New Caps, Solder them and it is all set.You also need to Check Fuses around that.

If the Problem Still Persists, get back to me with Make and Model we would Troubleshoot other Components.

Let me know, if needed further assistance.

Hope i helped you.

Thanks for using ' Fixya ' and have a nice day!!


Apr 07, 2010 | Philips Televison & Video

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I was watching tv on tuesday morning when all of a sudden it completely shut down. It's done this before but has always retrieved power within minutes. It has almost been a week and still no response. Ive...


You have a power supply problem. If you are competent to delve into electricsl equipment, carry out the following, else get a tv engineer.
Remove the back cover and inspect the power supply which is the board connected to the mains lead. Look at all the capacitors which are shown below.
9e4478e.jpg
Make sure that none of these have bulging tops which can be seen below.

309a98c.jpg
If any have, replace them.If they all seem ok, remove the board and inspect all solder joints under the board. If there are any dry or cracked solder joints, resolder.
If everything seems ok at this point, you may have a faulty semiconductor on the power supply board. If you have no standby light at all, i would order a new power supply board.

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