Question about Samsung HPN4239 42 in. Plasma HDTV

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Blown capacitor changed the capacitor on the left side 1 in a series of 4 heat sink next to these capacitors extremely hot to much i think to be anchored to a circut board also too hot to the touch burn hot and a smell what can i do thanks

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Most of this TV's are not a component level repair anymore,
unfortunately you have to replace the entire board

Posted on Apr 23, 2009

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Posted on Jan 02, 2017

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2 Answers

I just noticed there is no input voltage to the power board on my Emerson plasma tv model PL-P42W-10A


check the bridge rectifier on the black heat sink left side bottom one with the + - and 2 squiggles on it.
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Feb 05, 2018 | Emerson Televison & Video

1 Answer

Tv won't power up


just had this problem, heard a pop, tv off, removed back cover,checked blogs, disassembled power supply-- external ac to dc convertor, no screws, use small flat blade screwdriver, tap along sides at seam all along until it appears to pop apart. check capacitors and solder connections. My was an over heat issue, after removing plastic and cover aluminum heat sink basically, cooled down fixed crack solder and works-- will order a new one suggest you keep this i a cool spot. not next to a cable box! happy as the blogs are grim.

Jan 16, 2014 | Westinghouse UW40T Series UW40TC1W 40" LED...

1 Answer

How can i fix static on my maxent lcd tv


26 inch maxent mx-26x3 and 32 inch, l2614xw02 some same parts
When i hear the word static, i think snow,
If while your watching tv and it looks like color snow pixels popping in and out all over the picture i did this to fix it.
look at main board you see a green heat sink,
left of that heat sink you see a 220 uf 16 volt capacitor that half surround by 22 uf capacitors,
change the 220 uf capacitor and snow is gone.
to get it off i just wiggle slowly back in forth until the old capacitor falls off,
then put some fresh solder on and new capacitor on and done.
use a radial electrolytic capacitor not the little metal one they had on


tc
bagabillion

Jul 11, 2011 | Maxent MX-26X3 Television

1 Answer

Loud Pop and the Screen went dead on a LG 42PX3DCV plasma TV. 5 years old so out of warrenty. I took the back off the tv and checked all the ceramic resistors and the resister on the Y-SUS board has...


Hi
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.
Hope this helpout in solving the problem....

May 31, 2011 | LG 42PX3DCV 42 in. Plasma EDTV

1 Answer

My 50 inch lg plasma tv is flickering with no picture, we were watching it an u heard a click and then flickers with no picture.


Hi
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 Y-Sustain is a relatively large board out of which go connections to the side of the display; it's therefore closer to either the left or the right side of the display, has at least one rather large heat sink on it and fat power cables connecting it to the main power supply.

Often there are fuses on that board - one or more. Check those.

if they are blown you can try to replace them, but expect them to blow again - usually the whole board needs to be replaced.

Take care in solving the problem....

May 26, 2011 | LG Televison & Video

1 Answer

Lcd monitor automatic on off


There are 4 bad capacitors involved. It may not seem bulging but one or two are leaking. These are the 4 capacitors. 2 pcs. 470 microfarads - 25v 1 pc 1000 microfarads - 25v 1 pc 1000 microfarads - 10v I replaced them all. Next is to clean the board at the back. I got 91% alcohol and toothbrush and scrub. Concetrate on the 8-pin IC which has colored yellowish paste. Scrub or use a Q-tips buds soak with alcohol and clean it. Next resolder all 4 trasformers. Two on the primary and 2 from the inverter side. Also resolder the 2 transistor/mosfet (3 legs) which is attached to the metal (heat sink). After resoldering, again clean with alcohol by scrubbing or Q-tip buds for sensitive part.
Mine is working fine now. Good luck

Roan

Feb 02, 2011 | Samsung SyncMaster 920NW Monitor

1 Answer

No power?


power board failed check the main board the 5 volt side may have a few capacitors blown. check all of them as usually when 1 starts to go rest can follow don't cost much to replace. the ones next to the heat sink are first to start to wear out, use the ratings that are on the old capacitors and replace the same 105c temp rating. and rating to failed capacitors, you will see the faulty capacitors they will have blown bowed tops or a liquid on the bottom of them

Jun 21, 2017 | LG 37LG30 37 in. LCD HDTV

2 Answers

No power to Eiki EIP-2500 projector


there is a fuse on the power supply. if the fuse is good, you'll need to replace the power supply.

Jun 22, 2009 | Eiki EIP-2500 Multimedia Projector

1 Answer

No power


Simply use Safety. Unplug. Use Continuity Buzzer, Meter ( With Continuity Tone ). Can Use Meter if You Have & Watch, Check By AC Power Cord Fuse. Use a 500 Ohm to 5000 ohm Resistor on two Insulated clip leads with screwdrivers and Find the Hi-Voltage Capacitor ( Large Metal with Leads and a Diode on it. Short the Condenser from one side to another to BLEED any Voltage left Charged in the Condenser. Newer Microwaves have a Bleeder Resistor 10 MegOhms Built in. But Just do this for Backup/Sure Safety. Will Probally Just find a Blown 15-20 amp fuse ( Electrical Surge ). Any one of the 3 Door switches that DONT open-Close Smoothly Will Blow Fuse. ( Intermittent, Burnt, Skipping, Hanging up ). A Shorted Hi-Voltage Capacitor or Diode Will Blow Fuse. Open in Series Protection device may have opened because of Overload or Surge. These are Metal and loop in-Out AC Line and are Mounted ( Heat Sinked to Metal case ).

Aug 15, 2008 | Microwave Ovens

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