OK, I have a V 3.0 MS1 that I haven't used in some time. I replaced it with an MS2 complete kit when it died. Well, now I want to squirt my riding lawn mower, (no I don't have too much time on my hands, and why does everyone keep asking that!?), and want to fix it.
When I hook up the stim, I get nothing. I pulled the CPU, and tested for voltage and got between .92 and 3.8 on pins 1, 12-15, 18, 20-28, and 31. I also notice that D19 gets REALLY hot. I checked it, (D19), with an ohm meter and I have continuity both ways, (166 and 144). So I am thinking the first thing to di is replace D19. I am just wondering if any of you have any other ideas.
Thaks!
Tom
V3.0 board does not power up
Forum rules
Read the manual to see if your question is answered there before posting. Many users will not reply if the answer is already available in the manual.
If your question is about troubleshooting, configuration, or tuning, you MUST include your processor type (MS-I or MS-II) and code version in your post. If your question is about PCB assembly or modifications, you must also include the main board version number (1.01, 2.2 or 3.0).
If you have questions about MS1/Extra or MS2/Extra code configuration or tuning, please post them at www.msextra.com Such questions posted here will be moved to: a temporary MSextra sub-forum, where they will be removed after 7 days
The full forum rules are here: Forum Rules, be sure to read them all regularly.
Read the manual to see if your question is answered there before posting. Many users will not reply if the answer is already available in the manual.
If your question is about troubleshooting, configuration, or tuning, you MUST include your processor type (MS-I or MS-II) and code version in your post. If your question is about PCB assembly or modifications, you must also include the main board version number (1.01, 2.2 or 3.0).
If you have questions about MS1/Extra or MS2/Extra code configuration or tuning, please post them at www.msextra.com Such questions posted here will be moved to: a temporary MSextra sub-forum, where they will be removed after 7 days
The full forum rules are here: Forum Rules, be sure to read them all regularly.
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64Vair
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V3.0 board does not power up
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Matt Cramer
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Re: V3.0 board does not power up
Yes, replacing D19 should be the first thing to do here. Sometimes they can be damaged by connecting the VREF to 12 volts; other times D19 is slightly out of spec and pulls the 5 volt to ground.
