CamaroMurph
Active member
Well after quite a bit of corrosion clean up, I am finally on to step 2 of getting my BMX up and running. U8 socket replaced, all 3 40 pin sockets replaced. I get a flicker and then 2 flashes.
TP1 = 5.15V
TP2 = 12.8V
TP3 = 21.3V
TP5 = 5.15V
TP6 = 10.75V
TP7 = 2.12V
Everything happens the same with just J4 connected to the MPU, or all 4 connectors.
MPU flickers and then flashes 2X. Then goes off.
U8 readings at this point pin:
1 5.15V High
2 30mV Low
3 1.09V Pulsing Low
4 1.13V Pulsing Low
5 30mV Low
6 30mV Low
7 30mV Low
8 0V Low
9 4.54V Pulsing
10 4.54V Pulsing
11 5.38V High
12 5.24V High
13 3.14V Pulsing
14 3.14V Pulsing
15 3.07V Pulsing
16 3.07V Pulsing
17 5.3V High
18 0V Low
19 4.62V High
20 4.33V High
21 5.14V High
22 5.38V High
Suggestions on what to check next would be great.
Murph
TP1 = 5.15V
TP2 = 12.8V
TP3 = 21.3V
TP5 = 5.15V
TP6 = 10.75V
TP7 = 2.12V
Everything happens the same with just J4 connected to the MPU, or all 4 connectors.
MPU flickers and then flashes 2X. Then goes off.
U8 readings at this point pin:
1 5.15V High
2 30mV Low
3 1.09V Pulsing Low
4 1.13V Pulsing Low
5 30mV Low
6 30mV Low
7 30mV Low
8 0V Low
9 4.54V Pulsing
10 4.54V Pulsing
11 5.38V High
12 5.24V High
13 3.14V Pulsing
14 3.14V Pulsing
15 3.07V Pulsing
16 3.07V Pulsing
17 5.3V High
18 0V Low
19 4.62V High
20 4.33V High
21 5.14V High
22 5.38V High
Suggestions on what to check next would be great.
Murph