montravia
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Driving me mad, and seem to be going round in circles.
I wonder if anyone could suggest what's going on.
This a 'Mark 1' Magneti NIT, that is version 7.x Hardware: No USB or Bluetooth. Yes it's rubbish.
This isn't the usual repeated rebooting, with the Maserati Logo, that is attributable to disk head crashes. The disk has been replaced and clean image loaded. It was the test system for Phil's excellent work in replacing the disks and solving the boot issues.
Before I start pulling the NIT and probing inside again, perhaps someone could shed some light.
The cabling is fine. Although the NIT's been out many times as part of the tests, the cabling looks sound. It's tight behind there, and thought that a connector was becoming dislodged or cable pinched near one of the sharp metal support. Side panels off, cable carefully routed away from obstructions, connectors fine.
Oh, and as a precaution, the battery was replaced on Tuesday with a Bosch 5 as recommended on a recent post, unfortunately to no avail. Katching, £179.
Symptoms:
I'm going to call this 'Cold Start'. Not an accurate term, but let's say after the car has been standing for between 12 to 18 hours.
Screen completely blank. No controls on NIT work, radio, source, on off switch.
Stays that way for 12 to 15 minutes, then boot logo, and rapid boot to last screen setting.
Everything fine.
Re-starts normally for the rest of the day.
Warm start: Let's say left for 2 or three hours.
Either starts up immediately to last screen without boot sequence, or rapidly reboots as normal.
Perceive this is normal
Hot Start: Let's say left off for half an hour:
Restarts to last setting bypassing boot screen
Perceive this is normal.
One suggestion is that the boot EEPROM is losing its checksum, in which case is loads a fresh image from the disk, together with archived previous settings.
This could account for the time lapse especially if the EEPROM is 'slow' write.
The question is why?
It certainly seems to be a power bank issue. I'd expect to see CMOS RAM to behave this way, as when a PC's battery is duff, failing to keep the CMOS up, and previous settings are lost. But, EEPROM shouldn't do this, and their lifetimes are usually much longer than 10 years.
The question is, and before I start stripping the unit again, is it CMOS and supported by an on board battery? If so this is probably curable with a simple replace. However I don't recall seeing any battery when last dismantled, but that was 3 or 4 months ago.
This NIT is the only thing that really bugs me about the car, well, apart from not having a valved exhaust, but that is solvable. A new unit is about £3,500. Fuff, second hand one's I can't find, apart from the Polish/German chap on e-bay without assurance that it'd work. . I'd readily swap it out for a 8.x hardware unit if I could find one (replacing the carp disk again), or just solve this one.
Anyone know about the 7x board and what it might be? Probably exactly similar to the 8.x board processor.
Anyone know where I might source a 2nd hand replacement.
Any thoughts, helpful or amusing most welcome.
Hugs and kisses
I wonder if anyone could suggest what's going on.
This a 'Mark 1' Magneti NIT, that is version 7.x Hardware: No USB or Bluetooth. Yes it's rubbish.
This isn't the usual repeated rebooting, with the Maserati Logo, that is attributable to disk head crashes. The disk has been replaced and clean image loaded. It was the test system for Phil's excellent work in replacing the disks and solving the boot issues.
Before I start pulling the NIT and probing inside again, perhaps someone could shed some light.
The cabling is fine. Although the NIT's been out many times as part of the tests, the cabling looks sound. It's tight behind there, and thought that a connector was becoming dislodged or cable pinched near one of the sharp metal support. Side panels off, cable carefully routed away from obstructions, connectors fine.
Oh, and as a precaution, the battery was replaced on Tuesday with a Bosch 5 as recommended on a recent post, unfortunately to no avail. Katching, £179.
Symptoms:
I'm going to call this 'Cold Start'. Not an accurate term, but let's say after the car has been standing for between 12 to 18 hours.
Screen completely blank. No controls on NIT work, radio, source, on off switch.
Stays that way for 12 to 15 minutes, then boot logo, and rapid boot to last screen setting.
Everything fine.
Re-starts normally for the rest of the day.
Warm start: Let's say left for 2 or three hours.
Either starts up immediately to last screen without boot sequence, or rapidly reboots as normal.
Perceive this is normal
Hot Start: Let's say left off for half an hour:
Restarts to last setting bypassing boot screen
Perceive this is normal.
One suggestion is that the boot EEPROM is losing its checksum, in which case is loads a fresh image from the disk, together with archived previous settings.
This could account for the time lapse especially if the EEPROM is 'slow' write.
The question is why?
It certainly seems to be a power bank issue. I'd expect to see CMOS RAM to behave this way, as when a PC's battery is duff, failing to keep the CMOS up, and previous settings are lost. But, EEPROM shouldn't do this, and their lifetimes are usually much longer than 10 years.
The question is, and before I start stripping the unit again, is it CMOS and supported by an on board battery? If so this is probably curable with a simple replace. However I don't recall seeing any battery when last dismantled, but that was 3 or 4 months ago.
This NIT is the only thing that really bugs me about the car, well, apart from not having a valved exhaust, but that is solvable. A new unit is about £3,500. Fuff, second hand one's I can't find, apart from the Polish/German chap on e-bay without assurance that it'd work. . I'd readily swap it out for a 8.x hardware unit if I could find one (replacing the carp disk again), or just solve this one.
Anyone know about the 7x board and what it might be? Probably exactly similar to the 8.x board processor.
Anyone know where I might source a 2nd hand replacement.
Any thoughts, helpful or amusing most welcome.
Hugs and kisses