04-15-2010, 04:10 PM
I would go with the cold solder joint, or possibly a poorly seated prom. You may want to remove the chip, inspect the pins and the socket and then re-insert it. I have seen chips that are improperly seated cause all kinds of havoc. All it takes is a little vibration (like 250 mikes worth) to loosen one pin.
Larry Herman
2006 Cayenne S
2010 Allegro RED 38QBA
Nationally Certified PCA Instructor
Past Flames:
1994 RS America Club Racer
2004 GT3 Track Car
1984 911 Carrera Club Racer
1974 914/4 2.0 Track Car
2006 Cayenne S
2010 Allegro RED 38QBA
Nationally Certified PCA Instructor
Past Flames:
1994 RS America Club Racer
2004 GT3 Track Car
1984 911 Carrera Club Racer
1974 914/4 2.0 Track Car