Experiences in the journey to refurbish DAPS.
While I wasn’t looking, all major manufacturers have discontinued the 8-pin DIP plastic version of the ubiquitous LM301 op amp. When such a popular part is discontinued, there’s usually a years-long supply in multiple warehouses. I have had little luck… Continue Reading
If you have a DAP310 for repair or refurbish, please let me know. I’m now accepting repairs. Contact me by email, and I’ll provide you with my contact information. The same caveats apply: Meters, meter bezels, FETs, and several other… Continue Reading
Recently I acquired a new stock of parts for the DAP 310. My inventory now includes most parts EXCEPT the meter bezels or the FETs. If you have a DAP that needs repair, let me know. Most repairs are $200… Continue Reading
The trimmer potentiometers on the 310 are not very robust. They are not designed to be turned many, many times. If a pot is in an audio circuit, it’s easy to hear when it is going bad. When it is… Continue Reading
It’s somewhat axiomatic that replacing all electrolytic capacitors in a DAP should be the first step in a refurb. They’re about 43 years old, and they deteriorate over time. Axial capacitors are still available, but they’re getting expensive, and the… Continue Reading
The ground screw of the input/output barrier strip on a 310 that I’m refurbishing had a seized thread that caused someone to twist the head off. After a little research, I found that the Cinch 5-140-Y barrier strip is an… Continue Reading