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Goldstar tv modelcf-20d10b completely dead after replacing the str6707, zener, and caps 220,160v and 100,160v

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Before replacing the STR; have you checked all the components around it; that you have said here? 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/

Posted on Apr 10, 2015

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No power


Hello,
Check the power supply; look for bad caps with leaking/bulging tops, check to see if you have standby 5vdc at the power supply connector, the front red indicator will not be on if you do not have this +5vdc standby voltage due to shorted out power transistor and zener diode, but if otherwise, 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. This will help to solve the problem...

Aug 21, 2011 | Sanyo 42 in. LCD TV

1 Answer

It's sharp 52 inch lcd tv. Model is 52SB55U. I could not turn on the tv. There is no backlight, and only the power and opc indicator are blinking. I tried the factory reset, it didnt work. It could be...


Hello,

Check the power supply; look for bad caps with leaking/bulging tops, check to see if you have standby +5vdc at the power supply connector, the front red indicator will not be on if you do not have this +5vdc standby voltage due to shorted out power transistor and zener diode...if otherwise, 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 in solving the problem....

Jun 23, 2011 | Sharp LC-C5255U 52 in. LCD TV

1 Answer

Won't power on


Hello,

Common problem with this TV is the power supply module.
Check the power supply; look for bad caps with leaking/bulging tops, check to see if you have standby +5vdc at the power supply connector, the front red indicator will not be on if you do not have this +5vdc standby voltage due to shorted out power transistor and zener diode, if other otherwise Power supply board just die.It can be dead at anytime.Tries websites Shopjimmy.com,Ebay.com to buy a refurbish power supply board for the replacement.

Take care in solving the problem,because it contain high voltage...

Jun 14, 2011 | Televison & Video

1 Answer

Enter main220v str6707 shart


hi,
when u replace the str 6107 along Whit it ,replaced the opto-coupler, the polistor , ceramic capacitors in the str side. mainly that one connected to is pin 3.
on the out put side replace the SE1XX voltage controller also.
ok

Dec 22, 2010 | Sony FD Trinitron WEGA KV-36FS120 36" TV

1 Answer

Barbu51 D309 ck good, power caps look good. TV Syl SSL2006 is completely dead. Circuit board looks over heated around R416/17 & Q402. Don't have print so unable to know what these items vaules are....


Larry,

I was wondering if you ever located the problem in this tv? I have the exact same syptoms right down to the overheated section of the board with R417 and Q402. D309 checks good in mine and the power supply caps are not bulging or leaking at all. Any help would be greatly appreciated.

Ryan

Jan 12, 2010 | Sylvania Televison & Video

1 Answer

Goldstar tv CI-14A80A keeps blowing the circuit board ceramic fuse


TRY TO CHANGE THE POWER REGULATOR, WHICH IS LOCATED NEAR THE THE CAPACITOR, COMMON FAULT..WITH THIS THE ZENER DIODE CAN BE ALSO DAMAGED, ITS ALSO NEAR THE REGULATOR..FULL SERVICE THE BOARD....SHOULD BE WORKING THEN

Oct 13, 2009 | Televison & Video

1 Answer

Burnt Zener diode... Voltage spec??


On the cathode of the zener diode look for a filter cap and check its value the voltage of the zener should be less than the working voltage of the zener. Basicly its likely being used as a shunt regulator as protection and regulation of the voltage. When the zener hits a certain threshold it will breakdown and start conducting to ground until the supply regulates and then it will recover. If the filter cap for that voltage rail was 25V I would guess that the zener would probably be regulating between 12 and 20 volts. I'd pick a 15V Zener its probably +- %10 on the original and any system should be able to take a %10 tolerance as a general design rule.

May 07, 2009 | Emerson Televison & Video

4 Answers

HP Compaq FP5315 15" LCD Monitor dead


yeah replace the caps and sometimes the 7.5v zener diode burns up too. I have been replacing the surface mount ones with just a regular through diode

Jun 11, 2008 | HP Compaq FP5315 15" LCD Monitor

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