When I connect 12v on pins 28 and 7 of DB37, testing the socket (pins 1-2, 1-19, 1-32 and then pin 20-2, 20-19, 20-32 and finally pin 31 - 2, 31-19, 31-32) and I have v. 4.73v. I checked the welds, the orientation of diodes and capacitors, and I can not move from this voltage.
What is wrong?
At first I was v 4.58v and now 4.73v.
Thank you.
Low voltage in 40 pins socket
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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.
Re: Low voltage in 40 pins socket
One more thing: The testing in the U5 is: right leg v 5.03; central leg v 0.00; left leg from 9.71 to 9.73 v.
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Matt Cramer
- Super Squirter
- Posts: 2951
- Joined: Sat Jul 03, 2004 11:35 am
Re: Low voltage in 40 pins socket
What assembly step are you on?
Re: Low voltage in 40 pins socket
I'm in step 55, but the problem arose when testing the socket to check the voltage.
Measuring some components and I think F1 is failing.
Today I'm going to replace to see if I get the voltage I need.
Thank's Matt.
Measuring some components and I think F1 is failing.
Today I'm going to replace to see if I get the voltage I need.
Thank's Matt.
Re: Low voltage in 40 pins socket
Today I changed three times F1 and the socket test is 4.61 v. It falls from 4.9 to 5.01 V as stated in the manual. What is wrong?
Re: Low voltage in 40 pins socket
Finally, I solved the problem. It was the zener D19. Now I have v 4.99 on the socket.