callgrlmusic
Member
All,
friend of mine complained that his ToneBeast stopped working, and being that I'm the only one of his friends brave enough to peek under the hood, I've beeen asked to take a look. The TB-12 is essentially an outboard preamp with a few selectors for different types of capacitors, op-amps, input transformers, and the usual gain/hp/etc knobs and switches. In theory it's a very usable and cool box, and one could roll their own op-amps or transformers without much trouble if they wanted to.
So far I've:
1. visually inspected all capacitors for faults/leakage
2. cleaned all pots with Deoxit D5
3. tried using a known good mic, same cables, and a different outboard preamp into the same interface to rule out any of those things (it worked with the other preamp)
4. tried using both a known good dynamic mic and a good condenser (attempting to rule out phantom power issue)
5. used my multimeter to probe the actual power supply cord (showing 24v, as expected)
6. used my multimeter to probe the xlr connector with phantom power applied (assuming this should be 48v +/-4, but it's reading somewhere in the ballpark of 14v.)
I'm still getting no output. None at all, no matter what i do. To this device's credit, opening it up reveals, essentially, the world's most straightforward block diagram, which is cool; I tried calling Warm customer service and they really wanted me to send it in for repair and would not offer advanced troubleshooting over the phone. What would you do to troubleshoot from here?
friend of mine complained that his ToneBeast stopped working, and being that I'm the only one of his friends brave enough to peek under the hood, I've beeen asked to take a look. The TB-12 is essentially an outboard preamp with a few selectors for different types of capacitors, op-amps, input transformers, and the usual gain/hp/etc knobs and switches. In theory it's a very usable and cool box, and one could roll their own op-amps or transformers without much trouble if they wanted to.
So far I've:
1. visually inspected all capacitors for faults/leakage
2. cleaned all pots with Deoxit D5
3. tried using a known good mic, same cables, and a different outboard preamp into the same interface to rule out any of those things (it worked with the other preamp)
4. tried using both a known good dynamic mic and a good condenser (attempting to rule out phantom power issue)
5. used my multimeter to probe the actual power supply cord (showing 24v, as expected)
6. used my multimeter to probe the xlr connector with phantom power applied (assuming this should be 48v +/-4, but it's reading somewhere in the ballpark of 14v.)
I'm still getting no output. None at all, no matter what i do. To this device's credit, opening it up reveals, essentially, the world's most straightforward block diagram, which is cool; I tried calling Warm customer service and they really wanted me to send it in for repair and would not offer advanced troubleshooting over the phone. What would you do to troubleshoot from here?
