Question about Mitsubishi WS-65809 65" Rear Projection Television

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Horizontal output transistor

Is this an expensive fix? or Is it something I can do myself ??

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No not expensive at all from repair man but if you attempt it yourself you could damage serton components

Posted on Jul 31, 2008

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Samsung hcr5245wx xaa


It sounds that the horizontal output section circuit has the fault. The horizontal output transistor might have burned out. Check it.

May 23, 2013 | Projection Televisions

1 Answer

Blinking green light on a projection wide screen tv sill not turn on even with a system reset function any ideas?


A couple of things:
1) Power supply issues - most costly fix.
2) Horizontal Output Transistor went out 'HOT' - not a bad or costly repair/fix.
3) Flyback 'which supplies the 3 crt's' their High voltage.
Semi expensive repair/fix.
I would call and contact a few TV repair Service shops in town or your area and see if they can give you an estimate of repair.
Blessing,
A/V Media Guy

Nov 22, 2009 | Projection Televisions

2 Answers

No picture


I disagree with given info, this tv has no horizontal output transistor because it is dlp tv.
3 red light blink means lamp cover is not placed back properly after lamp replacement/ lamp checking. Make sure lamp cover is fixed back in its place securely and tight.


Jul 16, 2009 | Sony Grand WEGA KF42WE610 42" Rear...

1 Answer

TV is beeping from the back.


The horizontal output transistor is shorted and probably the flyback transformer is bad as well. Expensive to fix.

Mar 28, 2009 | RCA P52926 52" Rear Projection Television

1 Answer

When a push the power my tv do not want turn on only hear a click noise


This usually indicate a problem with the flyback, or the horizontal output transistor. Most TV problem is not repairable by the user, because of it's complexity. If you like reading, and honestly like to learn on your own, it is not so hard to learn to fix electronic device such as TV. Unfortunately a TV is not something you can look at and figure out how it works. I would suggest start by reading electronic books, preferably the ones with projects to help you learn how electonic device are put together to make a working circuit. The most I can help you with is look for the horizontal output transistor it is square with 3 pins, and is mounted on aluminum heatsink to dissipate heat. One of its pin would be connected to the flyback and the horizontal yoke.(The yoke would be the copper winding on the neck of the tube) be careful you don't touch the thick wire from the flyback to the back of the tube because a tv tube can carry large amount of lethal charge even if not plugged in! Take that transistor out of the circuit and test it with an ohmmeter. Set the meter to "diode" with the transistor facing you. the first pin is the base. Connect the red wire to that then the black pin should read around 0.4 voltage drop it maybe a little highe on the other two pins.. If you get a reading that is low it is shorted out. Note tho that some horizontal output transistor have a resistor connected to the first, and last pin (base emmiter junction) then it gets confusing. If in doubt just replace it. The cost of a horizontal output transistor is around a few bucks. Make sure you buy two of them! If the TV turned on after you raplace it but later failed again. You have to replace the flyback too. This time use your spare transistor along with a new flyback, which cost from 20- 50 dollars. Hope this helps.

Mar 22, 2009 | JVC AV-65WP74 Rear Projection Television

1 Answer

Horizontal Output transistor


IGBTs do not work well at high frequencies. They are not very linear, either. Even if it works, you'll likely wind up with a compressed and distorted picture.

Just put in an equivalent output transistor and call it a day.

Peace.

Marco

Feb 04, 2009 | Samsung HCL4715W 47" Rear Projection...

1 Answer

Zenith


First, locate the horizontal output transistor. This is found very close to, or next to, the horizontal output transformer (also known as the flyback). The flyback should be on an aluminum heat sink, or on the side of the metal chassis. Disconnect or unsolder two of the three legs of the transistor. Measure it with your meter, or plug in the set with the light bulb attached across the fuse.
If the transistor is shorted, or the light bulb doesn’t glow bright anymore, replace the transistor and plug back in. If the light bulb glows bright again, you must replace both the flyback and horizontal output transistor simultaneously. In some cases this will fix the set, but sometimes there are multiple problems with a set.
Go to where the flyback is, and start measuring the diodes and capacitors on the flyback itself. If you don't find any shorts there, it could be a shorted vertical output IC, a shorted sound IC, a shorted disc capacitor in the Hi Voltage/sweep circuit, or in rare cases, a shorted capacitor or tuner.Feel free to ask and post whatever the result of your troubleshooting..


Hope this may help;

Regards,
VOTIT

DON'T FORGET TO RATE

Aug 10, 2008 | Zenith R49W36 49" Rear Projection HDTV

1 Answer

Horizontal Output Transistor


i do not recommend that you do it your seft

Jul 18, 2008 | Mitsubishi WS-65809 65" Rear Projection...

2 Answers

Sony projector tv kp-61v80


The part is a horizontal output transistor 2SD2578. There are probably other parts shorted such as a flyback transformer and or power supply components. I would not try to fix this one if I were you. Sony TV`s rarely blow just one part. Usually you have a handful of bad parts. Sony`s can be difficult even for experienced technicians.

Mar 24, 2008 | Projection Televisions

1 Answer

TV - worth fixing or pitch?


Horizontal output and regulator transistor often short out on this model causing a dead condition. Also the resistor right next to the regulators goes open as well. Electronix.com has a sony repair kit to fix the power supply. You just have to check the numbers on your Horizontal output transistor to make sure you get the right kit for your model.

Feb 03, 2008 | Projection Televisions

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