Alpine TDM-7534 HU problem

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=62489
Printed Date: September 06, 2025 at 3:50 PM

Topic: Alpine TDM-7534 HU problem

Posted By: syNNer
Subject: Alpine TDM-7534 HU problem
Date Posted: September 10, 2005 at 12:39 PM

We have an older Alpine TDM-7534 cassette head unit we've been using in one of our work trucks. We sold the last truck it was in several months ago. Yesterday I went to put the deck into a new to us work truck and the deck won't power up. All that happens is a little square red LED in the upper left hand corner flashes, nothing changes on the display, a tape won't play, nothing. Is there a security code/reset on this deck that I don't know about? TIA

Replies:

Posted By: tcss
Date Posted: September 10, 2005 at 1:34 PM

Alpine never used codes but resetting the unit would be where I'd look first. This is vintage 1996 so I'm not certain of the location of the reset button but I believe it's behind the faceplate. Should be small and red.

Posted By: syNNer
Date Posted: September 11, 2005 at 1:07 AM

I can't seem to locate any red reset button on the unit, behind the faceplate or elsewhere. Pushing the power button only turns the flashing red LED on and off at this point.

Posted By: syNNer
Date Posted: September 14, 2005 at 1:22 PM

turns out the replacement OEM harness I ordered had a loose ground wire clip. all is well. thanks for the help.

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