Tech Tip Inftt2003-02 - Infinity PS-12 Service Manual

PS-10/PS-12
TECH TIPS
Troubleshooting tips and solutions to common service problems
For models: PS-10, PS-12, SUB750, SW-10 TIP# INFTT2003-02 Rev2
Subject: Replacing Output MOSFETS
In the event you need to replace MOSFET transistors Q18 or Q22 as part of a repair:
It is important to use ONLY the Infinity part# FE106401110, 051-640001-000, or only the brands:
International Rectifier, or Fairchild.
Replace both Q18 and Q22 MOSFET's in the circuit, even if only one seems to be damaged.
Do NOT mix & match these components from different manufacturers, or batches. They should be
identical.
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