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Old 9th Mar 2009, 4:21 pm   #3
Sideband
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Join Date: Oct 2003
Location: Croydon, Surrey, UK.
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Default Re: Alpine 7148L Car Stereo digital Tuning Fault

Quote:
Originally Posted by 'LIVEWIRE?' View Post
but the 4.5MHz Crystal Controlled Oscillator doesn't appear to be working, and the o/ps from the uP to the display are all at zero.
What about the crystal itself? Sometimes they go dry jointed or the crystal may have failed. Should be able to find something from RS or maybe even Maplin. They are usually quite cheap.

Vibration and bumping from our wonderful road surfaces may have seen it off!


Rich.
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