Question about Samsung SPN4235 42 in. Plasma HDTV

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SIR, I have a samsung lcd using mosfet

SIR, I have a samsung lcd using mosfet ipa60r385p (6r385p) in pfc circuit which equvivalent mosfet will function for the same
Thank you
RODNEY

Posted by Dicky Monteiro on

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Chi Chu

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No,get the same mosfet IC.Mosfet dosen't function like a capacitor,capacitors up a litte voltage it no problems.

Posted on Mar 17, 2010

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What should be the samsung crt tv smps out put voltage


They can vary depending on if it has PFC or not but most CTR sets didn't have that, I would look for 165+ that comes from line voltage divided buy .717, if it has PFC then it can get up to close to 350, generally the main filters give an idea of what the voltage should be, figure filter rating x .80. Remember on the hot side of the transformer use floating ground on the cold side frame ground when you measure.

Oct 29, 2017 | Samsung Televison & Video

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The red is blinking 8 times and green 4 times. The error charts states PFC circuit error. How can this be fixed ?


Power off at the isolator for 10 mins then switch back on and try again. If error code persists, then it is most likely the controller in the outdoor unit.
Excessive voltage of DC voltage on PFC circuit in inverter PCB is detected, or the excessive current in the circuit is detected.
> Permanent stop.
[Diagnosis Point]
Controller PCB defective (Refer to after mentioned "PFC circuit diagnosis")

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1 Answer

What is pfc circuit error?


Excessive voltage of DC voltage on PFC circuit in inverter PCB is detected, or the excessive current in the circuit is detected.
> Permanent stop.
[Diagnosis Point]
Controller PCB defective (Refer to after mentioned "PFC circuit diagnosis")

Jul 03, 2014 | Fujitsu Heating & Cooling

1 Answer

What is pfc protection


( Power factor correction ) Circuit protection on controls. The LG a/c is manufactured using the PFC and sign wave technology, By the PFC control, Raising the operating voltage from the existing DC 280 v to DC 380 v can be done. Thereby it makes operation smooth in high-frequency area. The sine wave control enables soft operation in low frequency area, Thereby expanding the product's operating range. This also markedly improves the product's energy efficiency. hope this helps

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1 Answer

I've replaced the mosfet rjh3047 because short-circuited. the new one is gone as well shorted. thing else I can check?


you must have some diagram b) must test some around components like capacitor+diode+resistor+ic+Trafo , that will be in short circuit this will provoke the short in your MOSFET transistor.

God bless you

Oct 15, 2012 | Samsung LJ92-01393A BN96-04594A...

2 Answers

46RV535U 46 in. HDTV LCD TV where is the fuse


There are several fuses on the power supply board.

Usually the one that fails is not the main AC line fuse (which is close to the AC line input), but the PFC fuse located, you guessed it, next to the PFC regulator IC on the board.

When the PFC fuse is blown (measuring open) you also need to replace the PFC IC and possibly other components on the board. Most of the time the PFC is sufficient though.

Here's a link for repair service for the board:
http://www.coppelltvrepair.com/p/751/toshiba-46rv535u-power-supply-board-repair-service-for-dead-refusing-to-power-tv-or-faint-display-problem

Also search there for the TV model, we may have repair kits or exchange services available!

Hope this helps!

Jul 30, 2012 | Toshiba Regza 46RV535U 46 in. LCD HDTV

1 Answer

Sir I have a DELL desktop CRT monitor which model no is E772p.It is not working .I opened the monitor and checked. I found that switching mosfet was short in power supply.It was taken out from the...


You will need a service manual to get the correct part number, I tried to cross with my NTE data base no luck, went into ebay site punched in the original numbers came up empty.

May 02, 2012 | Samsung SyncMaster 793MB 17" CRT Monitor

1 Answer

Standby power is ok (red light) but the green never turns on even on remote and push button


You have a switching problem. A MOSFET transistor component or a leaky capacitor problem. You need servicing Sir/Ma'am.

May 26, 2011 | Samsung LN40A450 LCD TV

1 Answer

Dear sir, We have 1 ups having problum with


Very complicated these items. I have not been able to repair even apparently simple faults, manufacturers such as emerson/leibert do not release cct diagrams, so very difficult to fix as there are many different sections (pfc,rectifier,charger,upconverter,bypass,inverter) of the circuit all interconnected with a micro processor monitoring and controllling the whole thing. You have to be really lucky to sort out any problem particulary one with blown components.

Hope this helps

Thanks for using FixYa

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