shabtek
Well-known member
custom manufactured transistors!???
[Build] CAPI CA-0252, Vintage 2520 Type Opamp, Official Support Thread
- Thread starter jsteiger
- Start date
Help Support GroupDIY Audio Forum:
Believe it or not, yeah. Were currently waiting on many other customs for our ADM202 and 1731 amps. TIS92, TIS93, 2N3704, 2N4062, 2N5376, 2N5086, 2N3053 and 2N4037. Woohoo!
klem
Well-known member
This question relates to both 0252 and VP28, I'll post wherever you prefer...
I built 16 0252s for 8 VP28s. 15 work great, but the last one, when placed in fader booster position, R17 on the op-amp and PR 2-4 on the VP28 smoked - see pics! Besides replacing these 3 R and checking for shorts anywhere obvious, anything else you recommend replacing or measuring before trying it out again? Diodes? Thanks,
I built 16 0252s for 8 VP28s. 15 work great, but the last one, when placed in fader booster position, R17 on the op-amp and PR 2-4 on the VP28 smoked - see pics! Besides replacing these 3 R and checking for shorts anywhere obvious, anything else you recommend replacing or measuring before trying it out again? Diodes? Thanks,
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