Samsung HPS4253 no power, PSPF391A01A / BN96-03252A power supply repair

Repair service for Samsung PSPF391A01A / BN96-03252A power supply which is used in the following Samsung Models,

     HPR4272X/XAA, HPS4233X/XAA, HPS4233X/XAC SD03, HPS4233X/XAC SG04, HPS4233X/XAC SD01, HPS4233X/XAC SG02, HPS4253X/XAA, HPS4253X/XAC SD01, HPS4253X/XAC 0001, HPS4253X/XAC SD03, HPS4253X/XAC SG02, HPS4253X/XAC SG04, HPS4273X/XAA and SPS4243X/XAA

Typical failure symptoms that indicate power supply failure: No power. Totally dead, no standby LED and does not respond to buttons being pressed. TV shuts down immediately after being turned on. TV makes a clicking sound.

If you are interested in having a PSPF391A01A / BN96-03252A power supply or any other power supply repaired professionally contact johnpreher@gmail.com

Thank you for visiting our blog and remember to also visit www.preherservices.com

Sony BRAVIA KDL40EX600, no power, APS-272(CH) power supply repair

Sony BRAVIA KDL-40EX600

Failure symptom: No power

Upon diagnosis of the power supply I found that  power MOSFETs Q6101 and Q6102 were shorted between source,drain and gate and fusible resistor R6536 was open. Power MOSFETs Q6101 and Q6102 were 2SK4096 , 8 amp, 500 volt, N channel MOSFETs and were replaced with substitutes, FQPF9N50CF 9 amp, 500 volt MOSFETs. Resistor R6536 was a 1/2 watt 0.47 ohm fusible resistor.

After replacing the faulty components and installing the power supply the TV turned on and was completely functional.

 KDL-55EX500, APS-272(CH) Professional Repair:

If you are interested in having an APS-272(CH) or any other power supply repaired professionally then contact johnpreher@gmail.com

Thank you for visiting our blog and remember to also visit www.preherservices.com

Sony BRAVIA KDL-55EX500, no power, APS-256(CH) power supply repair

Sony BRAVIA KDL-55EX500

Failure symptom: No power

Upon diagnosis of the power supply I found that  power MOSFETs Q6304 and Q6305 were shorted between source and drain and fusible resistor R6350 was open. Power MOSFETs Q6304 and Q6305 were 2SK4096 , 8 amp, 500 volt, N channel MOSFETs and were replaced with substitutes, FQPF9N50CF 9 amp, 500 volt MOSFETs. Resistor R6350 was a 1/2 watt 0.47 ohm fusible resistor.

After replacing the faulty components and installing the power supply the TV turned on and was completely functional.

 KDL-55EX500, APS-256(CH) Professional Repair:

If you are interested in having an APS-256(CH) or any other power supply repaired professionally contact johnpreher@gmail.com

Thank you for visiting our blog and remember to also visit www.preherservices.com