Roland JV-90 Repair
Customer states patch data corruption while in use which lead to weird sound all over the place.
repair
Roland XP-80 LCD Replacement
Final modification for my XP-80, and you can do this as well. Should apply to JV-2080 and XV-5080 as well.
Korg Triton Repair and Restoration
A long time viewer of my Bilibili channel contacted me to do a restoration of his Korg Triton.
Tektronix DPO71254B Repair
There is a DPO71254B at my workplace that has been abandoned for quite a while. I repaired it so that we can use it to debug (no cal though)
Roland D-50 Repair
The long journey of restoring a Roland D-50
Repair SONY DSC-P93
Repair a SONY DSC-P93 that has stuttering OVF zoom and an error message
Resurrecting AGM Lead Acid Battery
Although not regular flooded type, AGM batteries can also be restored by adding water if it's not too far gone.
Sharp GF-777 Restoration 夏普GF-777翻新
I restored a Sharp GF-777, replacing all belts and friction wheels, and the pinch roller
Alesis M1 Active MK2 Repair 维修记录
Repairing a pair of classic Alesis monitor speakers 维修一对经典的Alesis监听音箱
Roland XP-80 Repair 罗兰XP-80合成器维修
A Roland XP-80 synthesizer repair writeup