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Old 09-12-2019, 11:47 PM   #34
caboose1835
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Join Date: Sep 2019
City & State: Toronto, Ontario
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Default Re: Need help with Samsung T220

Quote:
Originally Posted by R_J View Post
You should have 5 volts on one side of R600 and about 4 volts on the other side, this would be the Backlight enable line. if you don't have it, try shorting Q601 base to ground and see if the backlights come on.
I had 5.21V on one side of R600, and 0.805V on the over. Shorting the Base to ground worked, but when I did it through my multimeter continuity setting it flickered quietly, and when I used a straight wire as well as a 1K resistor, the transformer squealed like a pig.

Also when I measure the resistance of the base on Q601, I get an open loop regardless of monitor state.

Is it safe to assume Q601 is a culprit? Or is it R600?

Last edited by caboose1835; 09-12-2019 at 11:56 PM..
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