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CDM 1550 audio problem

Posted: Tue Jul 18, 2017 1:08 pm
by radiocat37
I have a CDM-1550 (Non-LS) VHF. I am not sure if I have a true problem or a programming not correct problem. I am not getting any audio from either the front speaker (It is plugged in) or the rear speaker when attached with the acc. plug. I can change the setting in the CPS to handset and receive audio is fine through the front plug, using a handset. I have no history on the radio. It meets all other specs (TX and RX). Is there a speaker plug somewhere on the main board?

Thanks for any help

Re: CDM 1550 audio problem

Posted: Tue Jul 18, 2017 1:12 pm
by motorola_otaku
My first guess would be that the speaker amp is blown. AFAIK there's no programming setting or jumper on the board that would disable speaker audio like you're describing.