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Old 04-03-2013, 01:24 PM   #1
ztu165
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Wink Sylvania lc320sl1

I believe the tv has two transistors (k2417) that are bad. I would just like you guys to let me know if I'm correct in this. I have checked both transistors in ohms and diode mode, and from the drain to source I get around 2.437 ohms and when I come back to source after touching the gate there is absolutely no change. It does the same in diode mode and I believe after touching the gate and going back to the source it's supposed to go down significantly. What do you guys think?
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Old 04-03-2013, 01:28 PM   #2
johnboy1313
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Default Re: Sylvania lc320sl1

I can't add anything about the transistors. What is the issue with the tv?
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Old 04-03-2013, 02:46 PM   #3
budm
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Default Re: Sylvania lc320sl1

Did you test them out off the board?
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Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956

Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999

Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl

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http://s807.photobucket.com/user/budm/library/

TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809
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Old 04-03-2013, 03:15 PM   #4
ztu165
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Default Re: Sylvania lc320sl1

Yes I tested them out of the board. These transistors are from the backlight inverter. The TV does not turn on at all. I ordered the power supply and it still did not turn on at all so I decided to check all the transistors on the backlight inverter and those two give me the readings I mentioned.
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Old 04-03-2013, 04:59 PM   #5
budm
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Default Re: Sylvania lc320sl1

Can we see the picture of the boards?
Not sure if this service manual has all the ifo:
http://elektrotanya.com/?q=showresul...oria=&kat2=all

Last edited by budm; 04-03-2013 at 05:01 PM..
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