Blanpunkt Radio Getting Hot

[turbodrabbit]

I recently came across a Blanpunkt Las Vegas cd player and installed it in my lady's 1985 300td. I previously had the factory Becker, and when I bought the car the fuse attached to the radio was blown. I swapped out the fuse and no problem. My lady then tried to use the cig lighter to charge the gps and the fuse blew. I cleaned the contacts on the fuse box and the radio was functional, but I am unsure if she tried to charge anything.

Fast forward to the blankpunkt install, I wired everything up, splicing the Las vegas harness into the factory harness, and it works. I was about the place the radio back in the dash, and I noticed the unit was very hot.

I just added an additional ground to the Blanpunkt body, in addition to the factory spade ground. It is still getting hot.

Any ideas?