I have a 15L eBay ultrasonic cleaner. A few months ago the 5A fuse (F1) blew, I replaced it and the cleaner worked again........for a while.
The next time it failed, the breaker tripped on the garage, resistor R3 was burned, and all the transistors we shorted.
I replaced R1 and the transistors, as soon as I closed the Ultrasonic relay, F1 blew.
Being an electronics novice I'm having trouble working out what's going on and was hoping somebody here could help.
I've attached a photo of the main driver board, and a slide with the PCB tracks highlighted on the component side and components shown.
Please let me know what extra information you may need?
The next time it failed, the breaker tripped on the garage, resistor R3 was burned, and all the transistors we shorted.
I replaced R1 and the transistors, as soon as I closed the Ultrasonic relay, F1 blew.
Being an electronics novice I'm having trouble working out what's going on and was hoping somebody here could help.
I've attached a photo of the main driver board, and a slide with the PCB tracks highlighted on the component side and components shown.
Please let me know what extra information you may need?
