As I reassembled and tested my projector today I noticed the worrying smell of burnt electronics. After pulling the power cord I localized the problem to the galvo block, which was very hot. Further testing concluded that something is funky with the x-axis galvo. Connecting this galvo to either of the amps causes it to heat up very rapidly, whereas the y-axis galvo can be connected to either amp and still run cool.
I'm using laserworld 45K scanners. They have been working fine to this and normally run very cool. Is the x-axis galvo borked now? Any hints on possible fixes?
Some more info on the galvo:
Grounding the X-inputs or leaving them floating leaves the galvo centered without any vibrations and it does not heat up. It can still scan graphics OK, but as it heats up the graphics get distorted. The galvo uses optical position detection.
Does anyone know how much a new galvo costs?