Hypertherm Powermax65 SYNC - 65 A;85 A heatsink resistors

Prepare to Troubleshoot Internal Components
2
32 810430 Troubleshooting Guide Powermax65/85/105 SYNC
Hypertherm IGBT tester
Use the Hypertherm IGBT (insulated gate bipolar transistor) tester (128883) as described in the
following sections. Or you can assemble your own IGBT tester from the schematic diagram shown
on page 38 and use it to do IGBT tests.
Table 5 — Hypertherm IGBT tester
128884
7
8
9
1
2
3
4
5
6
1 0
1 Test for short-circuited IGBT
2 Fail LED (red)
3 Pass LED (green)
4 Circuit diagram
5 Low battery LED (red)
6 Test for open circuit in the IGBT
7 Rocker switch
8 Collector (red)
9 Gate (yellow)
10 Emitter (black)