I upgraded to 5V switching regulator to eliminate most of the heat as suggested elsewhere on site.
De-soldering was much simpler than soldering the new pins on the surface mount REG. There is not much of a pad.
The alignment for the original pins did not work so I had to remove and re-solder in the right orientation. If there was room I could have soldered to the bottom of the board.
I ruined the first REG and did the second one differently so as not to remove the pins from the board.
It works but my skill needs much improvement!
Upgrade to Switching Regulator
Upgrade to Switching Regulator
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5-TS1000,UK ZX81<-Sheelagh, US ZX81, 2-TS1500/KDLX , 3-TS2040 printer, 2-TS2020 cassette decks, ZXPAND+AY, ZeddyNET, ZXBlast, UDG, ZX8CCB, AERCO, BUILDS/REPAIRS ZX Spectrum, ZX80 Minstrel, ZXMAX48 v1 v2, 2-TS-2068, ROM, 16kRAM
Re: Upgrade to Switching Regulator
Nice job there Gammaray.
The reg normally used for the zeddy is similar to the one found here...
http://uk.rs-online.com/web/p/switching ... s/6664379/
Not sure if they are usable over your side of the water as the states seem to be a bit stricter over radio emission/noise etc than over here, hence the ground strap and silvered cases of the ZX81/ts1000 sold stateside.
The reg normally used for the zeddy is similar to the one found here...
http://uk.rs-online.com/web/p/switching ... s/6664379/
Not sure if they are usable over your side of the water as the states seem to be a bit stricter over radio emission/noise etc than over here, hence the ground strap and silvered cases of the ZX81/ts1000 sold stateside.