Repairing and Adding Bluetooth to an 80’s – 90’s AC Delco Radio

Wed, 17 Jun 2020 00:00:00 +0000

AC Delco Model 16131355

This post details the repair of a early 1991 AC Delco stereo. AC Delco made many variants of this stereo for both Chevrolet and GM cars, trucks, and vans from the early 80’s to the mid-90’s. While many of the stereos have more or less features (cassette players, radio presets, etc), the amplifier section of the radio is fairly standard and unchanged.

Internal Pinout and Schematic

TDK Trek Max A34 Teardown

Tue, 04 Apr 2017 00:00:00 +0000

This is a great bluetooth speaker - loud, good sound quality, waterproof, and durable. Yet sometimes it has bluetooth problems, playback problems, and doesn’t work when in motion (like in a backpack).

I opened this up to look for issues. I found none. Note that you are removing glued pieces and may lose some waterproofing. Mine still seems very water resistant, but I wouldn’t dunk it in a lake.

Bluetooth on PCB Isolation

Repairing and Adding Bluetooth to an 80’s – 90’s AC Delco Radio

Internal Pinout and Schematic

TDK Trek Max A34 Teardown