HI Amdb9,
I checked the web, and couldn't find anyone, but a place in australia that was selling the 2143, so it's either out of production, or scarce. I couldn't find it on the TI website either. So your repair guy's apparently found a suitable replacement..as for the sound, it's hard to say how it will effect it. If he's an experienced audio tech, then he should know whether these parts sound good, or whether another currently avaiable burr brown op amp would be a good substitute. What's the tech's hourly charge, most shops will have this posted prominently. It might take 30 minutes to replace the parts, or an hour and a half to replace the parts (depends on how easy the parts are to get to). Then the thing will have to be bench tested, and burned in -- just to make sure the new parts are okay. It's been so long since I've had any equipment repaired, I don't know what's being charged lately -- but don't expect it to be cheap. How much is the "estimate" ??
Good luck.
I checked the web, and couldn't find anyone, but a place in australia that was selling the 2143, so it's either out of production, or scarce. I couldn't find it on the TI website either. So your repair guy's apparently found a suitable replacement..as for the sound, it's hard to say how it will effect it. If he's an experienced audio tech, then he should know whether these parts sound good, or whether another currently avaiable burr brown op amp would be a good substitute. What's the tech's hourly charge, most shops will have this posted prominently. It might take 30 minutes to replace the parts, or an hour and a half to replace the parts (depends on how easy the parts are to get to). Then the thing will have to be bench tested, and burned in -- just to make sure the new parts are okay. It's been so long since I've had any equipment repaired, I don't know what's being charged lately -- but don't expect it to be cheap. How much is the "estimate" ??
Good luck.