tb lilley
Member
My Defender is occasionally resetting. The board has been modified to run 4164 RAM which uses only +5VDC, so I'm thinking there might be a problem with the +5 coming out of the linear power supply. I've already recapped the power supply and stuck a new bridge in at BR1, so that only really leaves the LM723 to go at.
The schems tell me that there are 2 LM723s on the power supply, and it's the one at IC1 that's doing some sort of job with the +5, but what exactly does the LM723 do, and is it worth replacing?
I assume that it does what it says on the tin, i.e it regulates voltage (to +5VDC), but I thought that was the job of the 2N6057 (which I also replaced a couple of months back). ..... Any advice gratefully received. Thanks.
The schems tell me that there are 2 LM723s on the power supply, and it's the one at IC1 that's doing some sort of job with the +5, but what exactly does the LM723 do, and is it worth replacing?
I assume that it does what it says on the tin, i.e it regulates voltage (to +5VDC), but I thought that was the job of the 2N6057 (which I also replaced a couple of months back). ..... Any advice gratefully received. Thanks.