Unit was not powering up. Capacitors on the power board blew out. Replaced them and now powers up, seems to be working fine except when I put a prereorded dvd it doesn't seem to find the first sector of the dvd. Just spins and makes noises and eventually displace can't use.. Any Idea?

Did you replaced the power supply as card basis; or, repaired it by replacing any capacitors at it. If you have replaced the capacitors only, the polarity of the capacitor you've replaced might be reversed. Capacitors have both +Ve and --Ve polarities, and should match with the markings at the board; otherwise it will burst when you power it up.
If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/

Can you please provide us the brand and model for this unit so we can help you better...

first of all check if you put all of the capacitors in the right way its more possible that one was put wrong and now its blown
also the best thing to do is to replace all of the capacitors at the Power Supply Unit except the one handling the 450 V (they arent above 20 ) just to be sure.
Hope that was helpful.

Good day!!!!


Commonly that trouble is cause of faulty capacitors on power supply board...

Power supply looks like this:


Please follow this step on how to fix that problem on your own..

1. Open the back cover of your TV.
2. Look at the power supply board..Its normally connected to the power cord..
3. After that,,try to look at the actual image of capacitors if it is bulged on the top so that you can easily determine the bad capacitors..
4. After that,,try to replaced the bad capacitors using soldering iron and soldering lead..replaced the capacitors only with the same type ratings and value..
5. Some of the capacitors not bulged so its better if have a capacitance meter..

Try to watch this video about capacitors and how to replace it...





I hope this solution will be helpful...

Thanks for using fixya...

Hello,


Your 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.


I hope this will help to solve the problem,,,,

Hello,

Your 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.

Take care......

Power board probally have burn capacitors.Take the tv aparts,check for puff up or burst open capacitors.Know how to solders? Replaced these capacitors well get ur power back.Or replaced the whole power board buy it at Shopjimmy.com,Ebay.com.

Remove the power board from the TV and look at the other side of the board. You should find the burn-out and then trace the printed board for a short.

It is most likely that the filter capacitors on the power inverter board have failed. I took mine apart and found seven swollen capacitors on the this board, they fail prematurely and seem to be the only thing wrong with the unit. I replaced them and now it is working just fine.

six 470uf 25v electrolytic capacitors and one 220uf 25v Capacitor.

you should not attempt to repair this yourself unless you have some electronics training since there is a shock hazzard involved and also these capacitors will blow apart if they are installed incorrectly (very messy experience).

What type of unit do you have, need details, if it is a split system there will be a pc board inside inside / outside or both units, on the board will be a glass fuse, turn power off at switchboard before removing covers.