K2625 intensity and calibration problem

Kits Automotive projects
1

Hi there,

In the first place, please forgive me anny errors, my english is a bid rusty :blush: .
I have the kit K2625 and I use it on 50cc 4 stroke scooters to adjust the CO. Becouse they have an CDI ignition they spark every revolution so I had to calibration to 30(00). Parts and soldering are fine but whatever I do with Vr1 the display brightness doesn’t change at all :angry: .
Well, it’s readable so I moved on and tried to calibrate it. With VR2 at absolut minus I can get it to 28/29. I’ll have to try the 250K for VR2 as I found on this forum and I will update this post if it works :unamused: .
But I like perfection so if annybody has a tip why the brightness doesnt work I’ll would be glad to hear it.

2

Update:

Changed Rv2 from 47K to 250K. Recalibrated, perfect could go from 01 to 80.
Intensity problem was ic, so I changed the 4093 and it workes fine now.