On Tue, 15 Mar 2016 20:01:54 -0000 (UTC), Cursitor Doom
wrote:
On Tue, 15 Mar 2016 14:25:41 -0500, legg wrote:
On Tue, 15 Mar 2016 14:04:46 -0000 (UTC), Cursitor Doom
wrote:
On Tue, 15 Mar 2016 09:58:03 -0500, legg wrote:
On Tue, 15 Mar 2016 11:05:24 -0000 (UTC), Cursitor Doom
wrote:
But this is really about trying to rescue the old one. They don't come
cheap!
The issue is with the new part, not the old one.
Wrong! The question *solely* concerns the *old* unit that failed.
The issue is your dissatisfaction with the repaired automobile.
You're not in a position to resurrect the old ECU.
The new ECU in all probability just requires a software tweak. My
question was about the OLD one (at the risk of repeating myself).
There's not much you can tell from a photograph of limited resolution.
Looking at what you've offered, you might re-examine locally:
http://www.magma.ca/~legg/TVS/EMU_captive_detritus.jpg
http://www.magma.ca/~legg/TVS/EMU_green_reflection.jpg
http://www.magma.ca/~legg/TVS/EMU_red_reflection.jpg
http://www.magma.ca/~legg/TVS/EMU_so...ontaminant.jpg
http://www.magma.ca/~legg/TVS/EMU_so...taminant_2.jpg
I expect these are mostly reflections in the protective epoxy, or
flow/tension marks formed in its application, but could be signs of
contamination or damage.
Even checking point to point contact is a trial with this stuff.
Vibration produces intermittent faults on assemblies (where the parts
don't actually shear off completely) The most suspect parts are those
with mechanical attributes - the crystal as previously suggested, the
connectors and bulky components. Reflowing the SJ of the latter might
be informative - any uncharacteristic loosness in the soldered
material of the melted joint is a giveaway.
As previous - an intermittent fault is unlikely to result in repeated
DOA symptoms, but it can be recorded for posterity in the firmware,
with DOA symptoms, or break small-signal paths with the same effect.
Did you try a reset on the 'dead' unit, before replacing it?
The fact that its replacement didn't involve the surrender of the
defect unit (for a discount in pricing) is a signal from the mfr
regarding their view on the viability of repair. They are in the most
sensible position to do so, after-warranty.
RL