Does any one have the power board schematics for this TV?

Hi Demise, from what you comment, you have problems in the power supply, what you describe with the CX125 ID, it would look like a High Voltage Capacitor, it could leak, if it is similar in appearance to the link photo, it may have other numbers simply replace it, but consult a specialized technical service
Regards Franco Dosil


https://sc01.alicdn.com/kf/HTB1UlspKFXXXXbbXpXXq6xXFXXXV/AJC-222-2kv-high-voltage-capacitor-Y.jpg_350x350.jpg

Hola Demise, por lo que comentas, tienes problemas en la fuente de alimentaci?n, lo que describes con la identificaci?n CX125, parecer?a un Capacitor de alta tensi?n, podr?a tener fugas, si es similar en aspecto al de la foto del link, puede tener otros n?meros simplemente reemplazalo, sino consulta a un servicio t?cnico especializado
Saludos Franco Dosil

https://sc01.alicdn.com/kf/HTB1UlspKFXXXXbbXpXXq6xXFXXXV/AJC-222-2kv-high-voltage-capacitor-Y.jpg_350x350.jpg

The TV has a chip that check to see if the circuits are OK before turning on the set. Samsung has a power, input and video boards. The problem is when it check the high voltage circuit and it does not have 390 volts, the chip turn-off the power instead. You can buy a new power board or fix it yourself. The power board is where the 120 volts AC is plugged in, and near the 120 volts is small transformer, then you will see a capacitor rated 100 uf at 450 volts. Check for 390 volts here. If the voltage is less, then replace this capacitor with a 350 uf at 400 or at 450 volts.Samsung used a "small" capacitor when it should have ordered at large capacitor. Good luck.

Check capacitor with a digital volt meter. In my Samsung, the TV has a chip that check to see if all circuits are OK before turning on the set. Samsung has a power, input and video boards. The problem is when it check the high voltage circuit and it does not have 390 volts, the chip turn-off the power instead. (It is a safety thing.) You can buy a new power board or fix it yourself. The power board is where the 120 volts AC is plugged in, and near the 120 volts is small transformer, then you will see a capacitor rated 100 uf at 450 volts. Check for 390 volts here. If the voltage is less, then replace this capacitor with a 350 uf at 400 or at 450 volts.Samsung used a "small" capacitor when it should have ordered at large capacitor. Good luck.

Check the power supply, the high voltage circuit, which near where the plug-in from the 120 volts. There is a capacitor rated 450 volts at 100 uf (microfarad). (Could be more than one capacitors). The high voltage at the capacitor should be around 390 volts, anything less and you will need to replace this capacitor (or capacitors). Replace with a 300 uf at 400 to 450 volts. Got mine off some old power supplies.

First thing you should do is to invest in a really good surge protector for your TV. Then when you replace the capacitor again use a good capacitor. Cheaper is not always better. Rubycon seems to do the best for me. There may be other suggestions, however I have the best luck with them.

The TV has a chip that check to see if the circuits are OK before turning on the set. Samsung has a power, input (control) and video boards. The problem is when it check the high voltage circuit and it does not have 390 volts, the chip turn-off the power instead. You can buy a new power board or fix it yourself. The power board is where the 120 volts AC is plugged in, and near the 120 volts is small transformer, then you will see a capacitor rated 100 uf at 450 volts. Check for 390 volts here. If the voltage is less, then replace this capacitor with a 350 uf at 400 or at 450 volts.Samsung used a "small" capacitor when it should have ordered at large capacitor. Good luck.

First Check small Blue high voltage capacitor 2kV Feed to the hori output Transistor Near your FBT flyback Transfomer If they are OK then replace Both of your STK ICs they are big black ICs will have Part number on them example STK392-110 Call Mats Electronics for Parts 1-800-628-1118

IF you have the G BOARD part #A-1316-367-A it's:
1-162-133-00 CERAMIC 390PF 10% 2KV
IF you have the G BOARD part #A-1316-422-A it's:
1-161-754-00 CERAMIC 0.001MF 10% 2KV

Remove diodes D2500 and D2501 (which are only protection, making the TV goes to standby instead of powering on) from the main power supply board. If the light does turn to a green one instead of going back to standby and you have the sound but no image, it should be the same problem as I had, which seems to be frequent with these Funai piece of junk.

You need to replace the ceramic capacitor C2258 on the main power supply board, it should be the faulty part as it was on mine. This capacitor is near an aluminium heatsink and was slightly burnt.

Here are the specs of that part from the service manual:
C2258 CAP CERAMIC HV 3300pF 2KV R K

As I didn't find a capacitor with these specs, I put two capacitors in parallel and it works fine now. Good luck!

Burnt small 2KV capacitor near flyback xformer....original is
221K....I use 271K / 2KV ...Possible burnt 1K 1/2 watt resistor
and shorted zener diode ....ECG 519..................T.