guitarwill
Active member
- Joined
- Mar 14, 2010
- Messages
- 36
hey i tried posted this over at the sca forum, but there doesn't seem to be much traffic over there so i was hoping someone here could help me.
i finished building 2 sca n72 revision 2.2 or 2.5 not sure witch one. the first time i powered up my r40 resister was to hot so i rewired the input transformer and that problem went away. so i got out my dmm to calibrate the unit and the most volts i can get to q6 is between 9 and 10, it's supose to be around 21.5 i think
any ideas on what the problem could be, the one i could think of is i skimped out and got a voltage regulator lt1075 or 1085 can't remember witch one from radio shack, the bom uses LT1085CT#PBF-ND. could that be causing that problem?
i did hook it upto my interface and tried to get signal through it just to check, when i flipped the phase switch it would spike the input for just a sec but that's the only thing that happened.
only other thing is i have jumper heads on j2, pins 1 and 2 of j3 and 4-( the ones by the xlr connectors)
also one more question, when wiring up the carnhill input transformer do the leads you make just have to be soldered to the pins on do they have to touch the base of the pins as well?
i finished building 2 sca n72 revision 2.2 or 2.5 not sure witch one. the first time i powered up my r40 resister was to hot so i rewired the input transformer and that problem went away. so i got out my dmm to calibrate the unit and the most volts i can get to q6 is between 9 and 10, it's supose to be around 21.5 i think
any ideas on what the problem could be, the one i could think of is i skimped out and got a voltage regulator lt1075 or 1085 can't remember witch one from radio shack, the bom uses LT1085CT#PBF-ND. could that be causing that problem?
i did hook it upto my interface and tried to get signal through it just to check, when i flipped the phase switch it would spike the input for just a sec but that's the only thing that happened.
only other thing is i have jumper heads on j2, pins 1 and 2 of j3 and 4-( the ones by the xlr connectors)
also one more question, when wiring up the carnhill input transformer do the leads you make just have to be soldered to the pins on do they have to touch the base of the pins as well?