08-12-2013, 05:39 PM

j69shep

Member

Join Date: Jan 2003

Location: phoenix az usa

Posts: 80

fix for a dead 70-77 gm am fm radio

70-77 am fm stereos use two delco modules for the preamp circuitry. The DM48. This radio had a bad one and as you may or may not know this part is not in reproduction. I reverse engineered the bad one and hand wired my own and it works perfect. This one is a prototype and I have also made this into a circuit board that will be a direct replacement for dead modules.

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