Need HELP with 2002 Mustang in-dash Radio Power Issues

When the car heats up under the sun the in-dash radio works fine but when it cools down the radio will not power up. I tried replacing fuse check the
wire harness etc. but can resolve this issue. Any advice will be highly appreciated.
Thanx.
Please drop me a line at vocalglobe//at\\hot mail//dot\\com (remove the //\\)
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Where do you live? In extremely cold conditions transistors & IC's can become "Cold Soaked" that is, the components have become so cold that their internal resistance has risen to the point that they can no longer conduct electricity.

it
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Thanx all for replying. I live in Texas where its in 100s now. The Radio will only power up in extreme heat. I just dont get it. Checked wiring harness and fuses no issues there still in normal temp the radio just will not power until in extreme heat. Any suggestion will be much apprerciated.

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says...

You might try asking on rec.audio.car.
I would try powering it from a 12v power supply and following the power bus. Use a heat gun and gingerly heat small areas until it works, then use a circuit cooler spray to cool it off in various areas until I could reliably make it start and stop.
Sounds like a poorly solder connection somewhere such that the conductors move/expand connecting when hot. That type of problem is more common than you might think. I used to see it at times when I was working in electronics. Especially component leads going through a soldered connection hole in a circuit board. The connection visually looked fine but when moved with an insulated tool or heated and cooled as I described would fail.
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