Question about Sony FD Trinitron WEGA KV-SW29M50 29" TV

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My tv no power.transistor IRF7N50A and IC MCZ3000 always blow

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Posted on Jan 02, 2017

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SOURCE: sony color TV model kv-c29 11d blown power supply ic and transist

There should be circuit designations printed on the PC board. Without those, there are too many possibilities to give you anything useful. Can you provide those please?

Thanks,
Dan

Posted on Jan 21, 2009

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1 Answer

Fisher tuner rs 881


Fuses blow when there's an overload. This is often caused by a short-circuited transistor or IC. Fuse blowing is more common in Amplifiers rather than a Tuner, where it is the power transistors that have failed. If it is a Tuner that's blowing the fuse then look to the power supply section for the faulty device.

Jul 15, 2013 | Audio Players & Recorders

1 Answer

Qsc mx 700 keeps blowing fuses after replacing all transistors with replacement parts not original


Have you replaced the IC , Q2 and Q2?

• Check the Differential Inputs ( IC1 ) and sorrounding components


• Check the Driver Stages


additional guides or suggestions:

Cross wired speakers and blown power transistor.



Beware also of counterfeit Power Transistors

Aug 05, 2012 | Audio Players & Recorders

1 Answer

I HAVE A TV SET MODEL TCL-I4175 MY PROBLEM IS WHEN I PLUG THE LINE CORD AND SW ON THE THE PUSH BUTTON THE FUSE ALWAYS BLOWN OUT . THE LAST TIME I HAVE REPAIR MY TV SET AT FIRST I HAVE REPAIR IT AND ITS ...


I am not familiar with this make but normally the cause of line stage transistors blowing is either power supply faults, line transformer issues or tuning capacitors including flyback diode issues.

Jun 23, 2017 | Televison & Video

1 Answer

What is the power output in a power amp and is it expensive


the output transistors are 5 to 10 bucks each for most.there are 2 or 4 on each channel,depending on brand .some high end amps have 10 transistors on each channel.mosfets are a different story as they run 20 to 50 bucks each and there is 2 or 4 on each channel.some amps use a big IC instead of transistors.those have 16 to 24 pins and are easy to change. Those IC are 25 to 75 for a stereo one like stk4141 etc.since most yamaha amps are dc coupled,when the output transistors go,they take out the driver transistors as well.If you replace the outputs and the drive transistors are shorted,they will blow the outputs again.

Apr 14, 2010 | Yamaha P3500S Amplifier

1 Answer

Symphonic WF 13 keeps blowing fuse as soon as I plug it in.


Probably your power supply circuit has shorted, check the rectifier diodes, STR IC, Transistor, and Degaussing circuit.

Jun 02, 2009 | Symphonic ST419E TV

1 Answer

Help me to resolve the problem


The problem of resistor of keep blowing caused by surge voltage,look for capacitor associated that resistor.The capacitor hold the voltage and distribute the exact volatage to that resistor if that capacitor is shorted or leaky,that is the caused of abnormal distribution. Also check the diode there and transistor.What is the number of IC driver you replaced,and do you have already schematic diagram?If not,i help you to give a links where you can avail.

Hope it may help you;

Regards,
VOTIT

Sep 19, 2008 | Sony FD Trinitron WEGA KV-36HS500 36" TV

1 Answer

Sony kv27v22 TV


check horizontal drive tramformer for intermitance is common problem some time blows horiz transistor to or vertical IC intermintence to

Apr 01, 2008 | Sony KV-27V22 TV

1 Answer

HCN4226WXIXAA


Good be just about anything. This set is common for the regulator IC, the STR-X6456 regulator IC to go bad for starters, the flyback transformer goes bad and takes out the horizontal output transistor sometimes and then blows the main 10 amp fuse. I have also seen the convergence IC's go bad then the set dies because the main fuse blows out, the power supply will go bad because of a surge. If you have no TV repair knowledge, play it safe and have the set looked at by a pro. Good Luck

Mar 30, 2007 | Samsung HCN4226W 42" Rear Projection...

2 Answers

No power


Check the FBT and the Horizontal Output Transistor also.

Sep 18, 2006 | Panasonic TX-15AT1 15" TV

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