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Old 05-30-2019, 03:00 PM   #19
sven337
 
Drives: Yaris
Join Date: Feb 2014
Location: France
Posts: 33
It's a buck module, not a linear power supply, you can adjust it without a load.
The VFD is only useful for testing, if you're doing my repair you don't need it you just need to set up the buck module for about 1.5V.

Removing the SMT components is easy. Chisel tip, 30W or more, add a bunch of leaded solder, heat up like crazy (you don't care you're removing everything) and the transistors will slide right off.

As for the VFD socket, I actually soldered the output lead of the buck module to the base of the VFD connector. Not soldering sounded like a potential issue with vibration.
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