Didn't like it?
I accept returns in the event of faulty goods but cannot take any responsibility for poorly assembled kits or devices which are damaged through installation or modification.
Of course I will help diagnose a problem, and suggest or supply a way to repair it.
All of the electronic parts that I fabricate myself are tested before shipping. The full kits are assembled and used to draw a test image to "burn in", and the Polarshield from the vitamin kit is tested the same way.
The Polargraph is not a "plug n play" device and you should expect to spend a couple of evenings getting it working, and accept that getting the very best performance from it often requires tuning as you use it.
The Polargraph is a fun, educational, mesmerising device for enthusiasts.