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Sony tv H.O.T

TV sony kv-25da1 what is the original horizontal output transistor? is it really bu808dfi? please help

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Yup. Can be replaced with a simple BU 208D

Posted on Apr 09, 2008


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H out transistor defetive & number missing plz solve


Hello

The horizontal output transistor number for Sony KV-ES34M61

Horizontal output - [Q6807] == 2SC5480-01
Pin output - [Q6808] == 2SC5480-01 Again

Please replace bothe the transistor at the same time. Check horizontal output transformer [LOT of HOT], for any defects.. Ok

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1 Answer

Sony FD Trinitron Wega Model KV-24FS 100 TV. Good morning from Arizona. The set is connected to Direct TV, and I use that remote, except when watching DVDs. A few days ago, the screen went blank, and the...


Hello,

The 2X blink indicates that either the Horizontal output transistor is shorted, or the RGB amp is shorted (on the CV board).

The Horizontal output is probably the cause, and as a general rule, the flyback should be replaced along with the H-Out transistor. Good news is that Sony is pretty good about having parts in stock. In fact, a lot of times they will have the A board with all the parts on it for only a few bucks more than just the flyback, so you basically get a new TV (electronics-wise).

Any decent repair shop should help get the parts/do the repair for you if you don't have the electronic experience.

Hope this helps you...

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1 Answer

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Probably a defective horizontal output transformer , also check the horizontal output transistor. Both parts available from tritronicsinc.com

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2 Answers

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The HOT transistor is shutting it down. (horizontal output transistor)
it cost about 8.00 for the parts and 100 for the labor.

you will require help from a tech.

Jan 09, 2008 | Sony FD Trinitron WEGA KV-32FS120 32" TV

1 Answer

No power.


Usually, in those Sony sets, a crack developes on a small transformer in the horizontal drive circuit, which causes the horizontal output transistor to short. This immediately shorts out the switching transistors in the power supply and blows the Sony 0.1 ohm resistor fuse. A shorted flyback (high voltage) transformer will also have the same result. The power supply does NOT need to be replaced. The parts should be replaced, the flyback checked and the board resoldered by a qualified tech familiar with Sony sets.

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1 Answer

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Yes, you should check other parts. The horizontal output transistor is more than likely shorted. Also the flyback could have gone bad. Some SONYs have problems with the horizontal driver transformer which is connected to the base circuit of the horizontal output transistor. If this little transformer has a loose solder connection, it will take out the horizontal output transistor. This may give you some insight as to where to look for your problem. Stargazer

Jun 11, 2007 | Sony FD Trinitron WEGA KV-27FS100 27" TV

1 Answer

1996 Sony 32" Trinitron - Suddenly lost picture and sound


The most common problem with TV was the failure of the Horizontal Output Transistor, this will also damage 2 transistors in the power supply and a resistor in the power supply also. (From memory): Horizontal Output location # Q501, 2 power supply transistors Locations Q601, Q602, and resistor Location R607. Also solder the Horizontal drive transformer, you can find it by following the circuit board from the base of the Horizontal output. Some models used an IC instead of the 2 transistors in the powersupply, it will have six legs and check like 2 transistors. Good Luck.

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