Question about Car Audio & Video
Can you add to the info already provided by Worldvet?
Sorry for the delay in getting back to you. You ask if I have any more info to add to what WorldVet has given. I am not sure what you have seen of my post , but will repost it to here for you and we can go from there.
Solution #2 posted on Nov 05, 2008
Rating: 90%, 631 votes
You didn't happen to get any make and model numbers of the unit whilst you had it out. Certainly sounds like the unit has a logic lockup caused by the battery going dead flat. I don't suspect the subsequent clutch start has affected it, more the brown out effect of the dead battery, or same when trying to initially start the car. It is possible that is has blown one of those pesky circuit protector pico fuses internally in the power supply switching stages. They can be problematic with interrupted voltage problems. If you can give me more info on the unit, I may be able to get a better diagnosis or a reset procedure for you. I take it you have inspected the front panel for any small holes that may have a reset switch behind it. If it is a factory fitter, there may be something in the user manual about doing a reset.
Comment by robotek, posted on Nov 05, 2008 They come in many shapes and sizes, and can be surface mount devices(no leads soldered straight to the board, small 2 pin black plastic device that resembles a transistor in shape. They can be as low in value as a few milliamps,and are designed to protect circuit stages if a problem occurs and can be numerous and plentiful through out the unit, A good bench technician that is familiar with car HiFi/electronics should be able spot them and diagnose the problem for you.
You say the screen is black, but is it actually blank. Can you see anything on the screen when you shine a torch up to it. It may be a backlit screen that the power supply stage has failed to.
The lack of brand names on the equipment points to it being a "back door" end of production run product. It may well be a decent brand that was bypassed off the production line before branding. A not uncommon move for smart importers and sneaky manufacturers. If there are any numbers anywhere... :) then we may be able to track down the donor brand of the gear and assist with some
Posted on Nov 08, 2008
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Posted on Jan 02, 2017
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