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Is my ecu bad ? See photo of solder joints
You can see my other thread the issue arrived when my frequency valve stoped working trying to trouble shoot and came across this what do you think?
So my frequency valve is not working    
Last edited by 911 sc; 06-21-2015 at 12:35 PM.. |
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06-21-2015, 12:33 PM
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Slippery Slope Victim
Join Date: Oct 2001
Location: Brooklyn, NY USA
Posts: 4,387
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I'd have Ingo Schmitz take a look. PM him.
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Mike² 1985 M491 |
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06-21-2015, 12:37 PM
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83 SC
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First few look fine to me but the lower right one in your last pic looks suspect like it needs more solder. Tim
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06-21-2015, 01:00 PM
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911 Abuser
Join Date: Aug 2007
Location: Sweden, Övik
Posts: 39
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 There might be a small crack on the right solder joint there, just re-heat it and see what happens. |
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06-21-2015, 02:43 PM
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Registered
Join Date: Jun 2009
Location: Manhattan Beach, California. Factory Delivery-Original owner-Retired engineer
Posts: 5,238
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Ecu
Ingo is the man.
Good luck, Gerry
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1986 911 Targa. Per Road and Track magazine: Only in L.A.: In the window of a bar in Hermosa Beach, California. "Happy Hour prices during all car chases." |
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06-21-2015, 02:48 PM
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This one actually looks the worst in person looks like it overheated and blowed out. These are hard to photograph.
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06-21-2015, 03:05 PM
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Registered
Join Date: Jun 2009
Location: Manhattan Beach, California. Factory Delivery-Original owner-Retired engineer
Posts: 5,238
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Solder joints.
Cold solder joints can be very illusive issues.
As a former EE in the aerospace industry, I witnessed some failure modes that involved cold solder joints which appeared to be nice & shinny but resistive, intermittent or open. For your situation, I would re-flow the ones which seem inadequate, then re-test as necessary. Also, component evaluation, such as discoloration might be the next step & should also be included in your diagnosis. Good luck, Gerry pm me as needed.
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1986 911 Targa. Per Road and Track magazine: Only in L.A.: In the window of a bar in Hermosa Beach, California. "Happy Hour prices during all car chases." Last edited by 86 911 Targa; 06-22-2015 at 06:16 AM.. |
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06-21-2015, 03:14 PM
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