Switch
LED
Position
Fail
Pass
Battery
This May Mean
Corrective Action
Left
X
–
–
IGBT is shorted
Replace IGBT
Left
–
X
–
IGBT passed short test
None
Left
–
–
X
Battery below 8V
Replace battery
Left
–
–
–
Dead battery
Replace battery
Right
X
–
–
IGBT is open
Replace IGBT
Right
–
X
–
IGBT passed open test
None
Right
–
–
X
Battery below 8V
Replace battery
Right
–
–
–
Dead battery
Replace battery
IGBT TESTER
Field Service Bulletin
3
2
Perform IGBT device test
Press and hold the switch in the desired direction to perform test.
Note: The IGBT is considered to be good only if it passes both the open and short device tests.
Troubleshooting
1.
Visually inspect leads and IGBT Tester for damage.
2.
Verify that the battery voltage is greater than 8V.
3.
Perform a self test on the IGBT Tester as shown below. If the results do not match the table replace the
lead connections.
Connect leads
Short Test
Open Test
None
Pass
Fail
Red to Black
Fail
Pass
Technical questions
If you are unable to fix the problem by following this basic troubleshooting guide or if you need further assistance
call Hypertherm Technical Service at (800) 643-9878.
Warranty
Hypertherm, Inc. warrants that its Products shall be free from defects in materials and workmanship, if Hypertherm
is notified of a defect within a period of six (6) months from its date of delivery to you. This warranty shall not apply
to any Product which has been incorrectly installed, modified, or otherwise damaged. Hypertherm, at its sole
option, shall repair, replace, or adjust, free of charge, any defective Products covered by this warranty which shall
be returned with Hypertherm’s prior authorization (which shall not be unreasonably withheld), properly packed, to
Hypertherm’s place of business in Hanover, New Hampshire, or to an authorized Hypertherm repair facility, all
costs, insurance and freight prepaid. Hypertherm shall not be liable for any repairs, replacement, or adjustments of
Products covered by this warranty, except those made pursuant to this paragraph or with Hypertherm’s prior written
consent.
The warranty above is exclusive and is in lieu of all other warranties, express, implied, statutory,
or otherwise with respect to the Products or as to the results which may be obtained therefrom, and all
implied warranties or conditions of quality or of merchantability or fitness for a particular purpose or
against infringement. The foregoing shall constitute the sole and exclusive remedy for any breach by
Hypertherm of its warranty
. Distributors/OEMs may offer different or additional warranties, but Distributors/OEMs
are not authorized to give any additional warranty protection to you or make any representation to you purporting to
be binding upon Hypertherm.
