I have a gm7200m im working on. i dont have power anywhere but the fuses. i checked d665 and no voltage present at all on both leads . The unit is dead. Could someone point me in the right direction. I bought Perrys dvd but havent looked at it very much due to time.
measured some voltages on the amp
IC 651 the pioneer 2027A 16 pin ic chip on the power supply
1-13.06vdc 9-16 were 0 exept 15 was .137vdc
2-0
3-13.63vdc
4-0
5-o
6-0
7-0
8-0
13.75vdc on one leg of C677
nothing on either leg of D665
T901 0 on all legs
the thermister on it 0 on both legs
0vdc on L601
r650 had 13.75 on one leg and 11.56on the other
and nothing on the power supply transistors
IC 651 the pioneer 2027A 16 pin ic chip on the power supply
1-13.06vdc 9-16 were 0 exept 15 was .137vdc
2-0
3-13.63vdc
4-0
5-o
6-0
7-0
8-0
13.75vdc on one leg of C677
nothing on either leg of D665
T901 0 on all legs
the thermister on it 0 on both legs
0vdc on L601
r650 had 13.75 on one leg and 11.56on the other
and nothing on the power supply transistors
If you don't have voltage on either leg of L601, there is a break in the connection between the fuses and L601.
- Status
- Not open for further replies.