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JL 1000/1v2 rebuild
JL 1000/1v2 rebuild
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Old 17th May 2019, 04:46 PM   #11
Perry Babin is offline Perry Babin  United States
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That's the transistor used in the newer versions.
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Old 17th May 2019, 06:06 PM   #12
miniman82 is offline miniman82  United States
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Excellent, soldering shall commence this evening.
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Old 21st May 2019, 04:38 PM   #13
miniman82 is offline miniman82  United States
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Power supply works but now I have the low ohm light, somehow I smoked an output FET. The originals are NLA but Mouser stocks STP40NF20 which looks like a viable candidate, see anything wrong with it? Original was 45n20.
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Last edited by miniman82; 21st May 2019 at 04:50 PM.
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Old 21st May 2019, 05:04 PM   #14
Perry Babin is offline Perry Babin  United States
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The newer models use FDP52N20 FETs with 22.1 ohm gate resistors. I don't know if the others will work.
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Old 21st May 2019, 05:13 PM   #15
miniman82 is offline miniman82  United States
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Bonus, the 52n20’s are cheaper. Ordering now.
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Gear I use: Tektronix 475 Oscilloscope, Lambda LA-200 Power Supply, Rat Shack DMM, 100w homebrew resistive dummy load, 20 Years Experience as a Navy Aviation Electrician
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Old 21st May 2019, 05:16 PM   #16
Perry Babin is offline Perry Babin  United States
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Order the resistors if yours has something other than the 22.1.
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Old 21st May 2019, 06:13 PM   #17
miniman82 is offline miniman82  United States
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I’ll have to see what it has currently
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Old 22nd May 2019, 10:32 AM   #18
miniman82 is offline miniman82  United States
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Gates currently have 4.7Ω on them, I’ll get some 22’s.
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Gear I use: Tektronix 475 Oscilloscope, Lambda LA-200 Power Supply, Rat Shack DMM, 100w homebrew resistive dummy load, 20 Years Experience as a Navy Aviation Electrician
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Old 25th May 2019, 11:56 AM   #19
miniman82 is offline miniman82  United States
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Almost forgot to ask, what’s the name for this soft material attached to the transistor clamps? Some of it got burned up when the power supply let go, so I need to source some to replace it.
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Gear I use: Tektronix 475 Oscilloscope, Lambda LA-200 Power Supply, Rat Shack DMM, 100w homebrew resistive dummy load, 20 Years Experience as a Navy Aviation Electrician
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Old 25th May 2019, 12:33 PM   #20
Perry Babin is offline Perry Babin  United States
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1466N12
McMaster-Carr
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