seduction pre amp quit working

[leland]

my seduction quit working and I can't find my cd to test this can anyone help with this

 

[galyons]

Hello,
You will need to be more definitive as to the problem then "quit working".  What is not working? Is it plugged in, fuse blown, getting power to the transformer?  Are the tube filaments lighting? 

Get out your DMM and run the voltage checks:

Seduction Voltage Checks
Terminal          Voltage         
6          6.5VDC         
7        0VDC         
9        6.0VDC         
10        0VDC         
11        0VDC         
12        135VDC         
14        0VDC         
15        148VDC         
16        0VDC         
20        0VDC         
25        160VDC         
26,36      0VDC         
27,37      70VDC         
28,38        0VDC         
29 ,39      70VDC         
30 ,40      70VDC       
34,44          135VDC         
35 ,45          0VDC         
A1,B1        70VDC         
A2,B2          0VDC         
A3,B3        1.6VDC         
A4,B4        0VDC         
A5,B5        6.0VDC         
A6,B6              70VDC         
A7,B7            0VDC         
A8,B8            1.6VDC         
A9,B9        0VDC         


Let us know the results.

Cheers,
Geary

 

[leland]

terminal      voltage
6                  9.4
7                    0
9                  5.46
10                  0
11                  0
12                178
14                  0
15                177
16                  0
20                  0
25                  178
26,36            these two bounce all over the place and the L.E.D.'s come on when i check here
27,37  starts high then goes down to 73.1 when LED's come on ,178 led's dont come on when i check here
28,38              0
29,39            177
30,40            bounces around a lot 70 and up
34,44            178
35,45              0
a1,b1              68.6, bounces around 90's up to low 100's one led blinks
a2,b2            .03, bounces around 1
a3,b3            1.49
a4,b4            9.6,9.61  led's have gone out at this point
a5,b5            10.4
a6,b6              178
a7,b7              0
a8,b8              .003,.007
a9,b9              0

at this point nothing seams to turn the leds back on

 

[Paul Birkeland]

26,36            these two bounce all over the place and the L.E.D.'s come on when i check here

You have a flaky solder joint making an intermittent connection.

-PB

 

[leland]

I can no longer get the leds to light any suggestions as to whare to start looking for this bad solder i dont have a schematic for this

 

[Doc B]

Just reflow every joint. It will take all of ten minutes.