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Anonymous, 02/19/2016 10:48 PM
To replace filters on Motorola phones you will need:
- [http://search.digikey.com/scripts/DkSearch/dksus.dll?vendor=0&keywords=HHM1526 HHM1526]
- [http://search.digikey.com/scripts/DkSearch/dksus.dll?vendor=0&keywords=HHM1523C1 HHM1523C1]
- [http://search.digikey.com/scripts/DkSearch/dksus.dll?vendor=0&keywords=04025A150JAT2A 04025A150JAT2A]
- [http://search.digikey.com/scripts/DkSearch/dksus.dll?vendor=0&keywords=04025A220JAT2A 04025A220JAT2A]
=== Remove existing baluns ===
First you will need to remove existing balun:
Image(motorola_filter_replacement_step_1_low.jpg, 250px)
Image(motorola_filter_replacement_step_2_low.jpg, 250px)
=== Solder new baluns ===
Clean up the phone and solder HHM1526 and HHM1523C1 on the right places (the black dot goes up):
Image(motorola_filter_replacement_step_3_low.jpg, 250px)
Image(motorola_filter_replacement_step_4_low.jpg, 250px)
Image(motorola_filter_replacement_step_5_low.jpg, 250px)
=== Solder ceramic capacitors ===
Last step is to solder ceramic capacitors 04025A150JAT2A and 04025A220JAT2A:
Image(motorola_filter_replacement_step_6_low.jpg, 250px)
Image(motorola_filter_replacement_step_7_low.jpg, 250px)
=== Credits ===
Thanks to Sylvain and Peter who made this possible.
Updated by about 8 years ago · 4 revisions