Troubleshooting & repair, Power module test (continued) – Lincoln Electric COMMANDER SVM153-A User Manual
Page 101
TROUBLESHOOTING & REPAIR
F-48
F-48
COMMANDER 500
HEAT SINK
POSITIVE (+)
CAPACITOR
TERMINAL
CONNECTIONS
FIGURE F.22 – IGBT TEST
POWER MODULE TEST (CONTINUED)
Check IGBT For "Shorts"
7. Using the analog ohmmeter, connect the
positive meter probe to the heat sink and the
negative meter probe to the positive capaci-
tor terminal on the Power Module PC board.
See Figure F.22. The resistance reading
should be high (over 20,000 ohms).
8. Reverse the meter probe leads. The resis-
tance should be very high (over 50,000
ohms). It the resistance is low in either Step
7 or 8, the IGBT may be shorted or leaky.
See also other documents in the category Lincoln Electric Tools:
- AIR VANTAGE IM10065 (54 pages)
- PRECISION TIG IM936 (44 pages)
- MAGNUM IM887 (20 pages)
- X-Tractor 1GC (4 pages)
- CAN-M393 (3 pages)
- CV ADAPTER IM309-D (46 pages)
- Idealarc 250 (2 pages)
- L12810-1 (4 pages)
- IM359-G (34 pages)
- OUTBACK 145 (34 pages)
- 4.1 (20 pages)
- CV-655 (47 pages)
- K1308-12 (4 pages)
- IM803-B (31 pages)
- LN-25 IM10092 (39 pages)
- PRECISION TIG 275 IM702-A (46 pages)
- Pipeliner 200D (4 pages)
- POWER FEED 10M SINGLE/DUAL SVM172-A (151 pages)
- CLASSIC 300G IM659-B (33 pages)
- INVERTEC V350-PRO IM708 (38 pages)
- Magnum 300 and 400 GMA Gun & Cable Assemblies K514 (29 pages)
- CLASSIC III 10061 (34 pages)
- 347 AC-DC (3 pages)
- INVERTEC IM958 (38 pages)
- Cool-Arc 40 (2 pages)
- IM795 (39 pages)
- Excalibur 11018M MR (1 page)
- METALUX 396T8HO (2 pages)
- MIG PAK HD IM822 (39 pages)
- VINTAGE 400 (CE) IM889-A (49 pages)
- IM481-B (35 pages)
- POWER MIG SVM157-A (91 pages)
- 600-I (2 pages)
- 4R90 (8 pages)
- IM613-B (54 pages)
- pmn (35 pages)
- RANGER 250 IM919 (49 pages)
- Welding Helmet (4 pages)
- IM355-C LN-9F GMA (70 pages)
- IM628 (17 pages)
- COOL ARC 35 IM959 (22 pages)
- POWER MIG 215 (35 pages)
- LN-25 PRO IM901-A (44 pages)
- METALUX 248 (2 pages)
- MAGNUM PCT125 (25 pages)