JBL For models E150P,E250P, TIP# JBLTT2003-04Rev2, P10SW, P12SW, PB10,PB12 Revision, Tech Tips

E250P/P12SW subwoofers

TECH TIPS

Troubleshooting tips and solutions to common service problems

For models: E150P,E250P	TIP# JBLTT2003-04 Rev2
P10SW, P12SW
PB10,PB12 (Revision 2) *
Subject: Replacing MOSFETS Q18, Q22

In the event you need to replace MOSFET transistors Q18 or Q22 as part of a repair, it is important to use ONLY:

•JBL part# 051-640001-000

•Or JBL part# FE106401110

•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.

*Late version PB10 or PB12 subwoofers (Revision 2 in the service manual) can be identified by:

•Amplifier serial number starts with “HA”

•Output transistors in the open, on a large black heatsink

•Large plastic cup enclosing the rear of the amp assembly

•Main PCB, bottom, solder-side contains all SMD devices

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