Crack and Speedball Voltage check error

steel

New member
All assembly completed

Voltage check:
1. 12.6
2. 175

4. 175
5. 15.2

On A and B PCB, The led is dark.

How to check?


Sorry,
I found my mistake...R1 is 237R I put 220K
 
something wrong?

5. 158V

9. 158V

I am worried about some Transistor maybe burn?
But change a new 12AU7, all Voltage check are right.

AC in : 113V
Heater voltage only AC 5.6V, is OK?

Sorry for my poor english.
 
On A and B PCB, The led is dark than others still.

New Check....

1.  74
2.  167
3.  0
4.  166
5.  69

6.  0-60 mV (Floating)
7.  101
8.  0
9.  97
10. 0-60 mV (Floating)

11. 0
12. 0
13. 165
14. 0
15. 183

21. 201

A1. 69
A2. 0
A3. 1.53
A4. 0
A5. 0
A6. can't touch by lead
A7. 0
A8. 1.56
A9. 0

B1. 73
B2. 166
B3. 102
B4. 69
B5. 166
B6. 98
B7. 0
B8. 0

 
A damaged 12AU7 can cause abnormal voltage?

Finished, but not try to add headphone yet.
7823.jpg


7827.jpg


Two switch, Turn on heater first, Then high Voltage.
7828.jpg
 
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