F*** Up Circuit Board ....Help
09-19-2009, 09:28 AM
#1
Junior Member
Thread Starter
iTrader: (4)
Join Date: Oct 2008
Location: South Jersey 5 min. from NJMP
Posts: 189
Total Cats: 0
F*** Up Circuit Board ....Help
Ok, so I am a dumb ****, now that's out of the way. I damaged my circuit board at the Q4 connection. It is beyond repair. I am hoping to trace where each leg goes and make the connections for the PWM idle valve circuit elsewhere. I had the board almost completed when I fucked it up. I checked the schematic for the board but I am not really up to speed reading electrical diagrams. I could use some guidance as to where I could make the connections now that the board is damaged.
It is a MS I v3.0 board
It is a MS I v3.0 board
Reply
0
0
09-19-2009, 12:04 PM
#2
That sucks man.
(From abe's album)
Its Funny, we were working on the idle problem all day yesterday, so that circuit is fresh in my head.
The top of R19 goes to Q4's pin 2 on the board.
Pin 1 on Q4 goes to Ground, then Pin 3 Goes straight to Pin 30 on the DB9. If you want to, you can also install it on the right side thru-hole point on D8. Its a pass through.
Make sure you follow directions on installing the TIP120, youre going to need to pull up a 12V using a Diode. Its in the manual.
(From abe's album)
Its Funny, we were working on the idle problem all day yesterday, so that circuit is fresh in my head.
The top of R19 goes to Q4's pin 2 on the board.
Pin 1 on Q4 goes to Ground, then Pin 3 Goes straight to Pin 30 on the DB9. If you want to, you can also install it on the right side thru-hole point on D8. Its a pass through.
Make sure you follow directions on installing the TIP120, youre going to need to pull up a 12V using a Diode. Its in the manual.
Reply
0
0
09-19-2009, 03:14 PM
#5
Junior Member
Thread Starter
iTrader: (4)
Join Date: Oct 2008
Location: South Jersey 5 min. from NJMP
Posts: 189
Total Cats: 0
[QUOTE=Marc D;456161]That sucks man.
(From abe's album)
The top of R19 goes to Q4's pin 2 on the board.
What is considered the "top" of r19 ? I assume it means when you are looking at the board, the db9 is on your left and the top is where the heat sink is located.
(From abe's album)
The top of R19 goes to Q4's pin 2 on the board.
What is considered the "top" of r19 ? I assume it means when you are looking at the board, the db9 is on your left and the top is where the heat sink is located.
Reply
0
0
Thread
Thread Starter
Forum
Replies
Last Post
Zaphod
MEGAsquirt
47
10-26-2018 11:00 PM
