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Deadset no power but have B+ voltage 125 volts I think the problem is the Horizontal transistor deffective 2001 HI

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Yeah, a strong possibility or the flyback. Check first its other minor component to be sure.You can check (HOT)it out of the board and test for short or leaking junction.

Posted on Apr 15, 2009

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Panasonic sophia 21 inchez..


Check and replace damaged component/s at its horizontal scan output section circuit. Check the LOT (Line Output Transformer) too for damage. Replace the horizontal scan output transistor. Check the input voltage to LOT. If the voltage is absent check the feeder resistor; if any. If you wish to get some details; check the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/
Type in this key phrase " my service table today " in the search box at the top right of the display window of the home page, to get gathered some pages which has the details of practical experiences of the author of that site.

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I have a Sony FD Trinitron Wega (KV-32HS510). When I attempt to turn the tv on by pressing the power button on the remote or on the tv, the standby light comes on and I hear two clicks but tv don't...


The primary power supply is good,maybe the horizontal output transistor is deffective thats why there is no high voltage supply in the picture tube because theflyback have no supply voltage and oscilation.So check the harizontal output transistor and replace if deffective.

Sep 12, 2011 | Sony FD Trinitron WEGA KV-32FS120 32" TV

1 Answer

My tv is samsung 21A530 ultra slim the problem there are curve in all corncers and horizontal bar on the top and bottom


The problem of your television is the abnormal screen like the pincussion in booth side and bar at top and buttom.The cause of that is the abnormal supply voltage of the crt board.The power supply have low output voltage because deffective and leak parts like the regulator transistor or capacitor.If the power supply is low voltage it affects the apperance of the screen of the TV.So its better to replace the deffective parts of you television to came back the normal appearance of you TV.If you do not know how to repair and troubleshoot its better to called a repair technician.

Jul 11, 2011 | Televison & Video

1 Answer

Tv will not turn on. I have unplugged it and tried another outlet but still will not turn on. There is power going through the Tv. Any thought on what it could be


check your b+ first. if your tv has no 125 volts your tv will not turn on check your horizontal transistor located in the side of the flyback transformer unsolder the collector then try to power on your tv check your high voltage at the collector without the collector of the horizontal transistor.

Dec 22, 2010 | Akai CF2791 27" TV

1 Answer

Red light comes on when powed up but then goes out when push ch button and thats it


Check the voltage to B+ on horizontal section, make sure the voltage is 115 Volt to 125 Volt, and also Check the transistor horizontal output, include Transistor horizontal driver. there must exist at the base of the transistor voltage of 0.5 volts -1.5 from IC Horizontal.

Sep 30, 2010 | Televison & Video

1 Answer

Television


Hi

ang voltage ng HOT 90 to 120 Volts. kapag standby power yan ay 90 volts japag nag oscillate ang HOT power yan ay tataas ng 120volts Psi. Technician kaba?

Thanks
Likha!

Sep 25, 2008 | Televison & Video

2 Answers

Please help me.


checked the horizontal output,a big transistor near the flyback trnsformer, if it is shorted replace it,,,,

Feb 13, 2008 | Sampo AlphaScan 411 Monitor

1 Answer

No power even standby LED..


This is like a car running without a driver,the horizonatl output transistor has the voltage it needs but it does not have horizontal drive signal applied to the base of the horizonatl driver transistor,the driver transistor should have a signal coming from the signal processor where the signal is generated just to get give it to the driver this driver then it gives it to the output to energize the flyback and light up the picture tube and generate a few other supplies,158 volts are there because the output is not turn on,try measuring voltage somewere else in the set and not at the collector of the output,there is a b+supply that goes to the signal processor(8 to 12 volts),check to see if you have this voltage,I couldn't tell you the pins in the siganl processor IC without squematic,It seems you know your way around tv service but be careful when checking voltages.Let Us know if you need more information.

Oct 10, 2006 | Samsung TXJ2067 20" TV

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