Question about Sony FD Trinitron WEGA KV-32FS16 32" TV

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Goldstar tv power supply problem, leak of voltage going to mainboard, the 120v suddenly decrease after a whiloe to zero

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Re: goldstar tv

Leak of voltage going to mainboard, the 120v suddenly decrease after a whiloe to zero you mean short circuit. it is not power supply problem as you say that it drops to zero after connecting main board. it clearly indicates that problem in horizontal output section.

Posted on Sep 19, 2007

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Crt standard hisense 54cm colour tv model tc2198L no powering fuse ok HOT ok.

Check the power supply.If you have no output from the power supply try to disconnect the power supply from the other circuits ( such as the IF,audio,video,horizontal,vertical,etc.If the voltage at the power supply comes up when you disconnect a particular circuit then that circuit is loading down the power supply and you would troubleshoot that circuit.If after disconnecting the other circuits and the power supply still shows zero,then you would troubleshoot the power supply.

Sep 14, 2013 | Standard (CRT) Televisions

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The picture does not come on when I turn it on.


Your TV is now in dead condition I should say. You should strart from its power supply regulation section itsef to rectify the fault. Look into the fuse, a glass fuse is there, in power supply board. If It has found blown, make sure that there is something short in either power supply regulator side, of on the other part of the printed circuit board.
You just place a fuse of same rating as used, if the fuse is blown. If the fule you installed newly also blows off, check first the retifier stalk for any leak. The stalk contains four diodes, even any one of them gets shorte, fule will blow up. If there is no leak in the retifier stalk, measure the voltage resistance across the main filter capacitor, a bulky one capacitor fitted in the power regulator section. If you see a full deflection on meter, it means that there is some dead short inside the power regualtor system.
Usually Sony uses STR regulated type power supplies, and some uses MOSFET [Metal Oxide Semiconductor Field Effect Transistors], as switching elements. Bothe of these types can be shorted, due to a high voltage spikes, or a sudden supply failure and restart.
Check out short test on these components, out of board, that is, desolder it out from the circuit board. You just resolder one by one and measure the resistance ad described above. Thus you can find out the exact component, that have a short. If any of these components shorted, check the entire power regulator section for any more component failure, like zener diode short, resistors opened, and so on. You should have a concept of soldering and a little knoledge in electronics. There will be a MOV [Metal Oxide Varistor] fitted across the power supply input, which look like a disc capacitor. it will get shorted when a certain voltage spike occures abvve its rated voltage, and apply a dead short at the supply stage. If any of them used, desolder it out and check for any leak, and is found leaky, replace it. It is used as a saftey measure, and without it the set will work fine.
Just check these and if you find any difficulty, contact me through Fixya. Ok.

Nov 29, 2010 | Sony KV-36XBR450 36" TV

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My RCA television quit all of a sudden and now the power button is flashing green and won't turn on.

Your tv has a power supply fault, take it to repair shop and have it repaired
ask the technician to check the following components
semi conductors around the supply section, also ask him to check the (ht) high tension voltage which triggers a line transformer which in turn gives small outputs voltages to power the tv.

Jan 03, 2010 | RCA 32V524T TV

2 Answers

Tv wont turn on

Ur high voltage is dead,the FBT,the flyback transformer is dead.The big black block of plastic with a red wire with a cap hook to the CRT(tv tube).

Mar 19, 2009 | Sony FD Trinitron WEGA KV-36HS420 36" TV

2 Answers

Tv keep going on standby when you turn it on

tv goes into standby all the time if a power supply is not fine, what happens is that a power supply produces two voltages, one small one powers a standby components and bigger voltage powers a line transformer which later produces more small voltages,
then later cancels the first small voltage.

chec your power supply semi conductors like, transistors, diodes and small value resistors, on your power supply. some power supply uses a IC to oscillate a ht. so check a supply at a w/shop.

Feb 07, 2009 | Goodmans 257NS 20" TV

1 Answer

Goldstar TV (unknown model)

tv has a power supply fault requires service

Oct 22, 2008 | JVC AV-27530 27" TV

1 Answer

No picture no sound

replace the cpu of your mainboard and check the out put voltage of your dc power.

Jun 09, 2008 | RCA 27F530T 27" TV

1 Answer

A mistake in my parts i.d.


Dec 31, 2007 | RCA 27F530T 27" TV

1 Answer


pls check power supply output. check the voltage difference in both conditions

Dec 05, 2007 | Standard (CRT) Televisions

1 Answer

Power supply of tv

if voltage drops means there is a short circuit in your tv. 1 disconnecting 120v line if supply becomes ok then there is short ckt in horz.section &if it does not gives 120 volts then there is problem in power supply. please check as per instruction &let me know. good luck.

Sep 19, 2007 | Proscan PS36500 36" TV

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