Hello, if you can remember me, I have a TS1000 that works but the jacks have been scraped (using a file to remove "excess" plastic to fit the plugs). So I'm asking that if it is possible to replace the EAR and MIC jacks with new 3.5 inch mono sockets like in the link below:
www.ebay.com/itm/301174358339
and the 9V DC jack with a plug that is shown in the picture below (the replacement 9V DC plug is shown at the top of the TS1000).
Replace jacks in TS1000
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Re: Replace jacks in TS1000
The mono jack plugs that XOR linked to on Sell My Retro should be okay for TS1000 machines.
I don't know of any 2.1mm( inside dia)/5.5mm(outside dia) mini "DC" power connectors or of any 2.5mm(ID)/5.5mm(OD) mini "DC" power connectors that will neatly fit on the ZX81/TS1000 board.
It may well be possible to glue one upside down (with it's legs/pins in the air) on the PCB and then run wires to link the relevant pins to the +9V and 0V tracks.
Normally it is recommended to use an adaptor cable, with a 2.1/5.5 power connector "in-line" type wired to a 3.5mm mono jack plug. There is a picture in a post about this somewhere.
To reduce the amount of unplugging/plugging back in, you could either add a reset button (requires soldering to the PCB), or add a in-line "torpedo" on/off switch in the low voltage power cable.
Again, there are posts that talk about both of these modifications.
And just a reminder, it is critical that any changes to the 9V DC wiring are checked to ensure the polarity is correct. If the polarity is incorrect, the 7805 voltage regulator will be destroyed and any expansion devices that use the +9V line will also be damaged.
When I'm on a proper computer later, I will add some links
This non-English site compares a ZX81 vs. a TS1000 including pictures.
Mark
I don't know of any 2.1mm( inside dia)/5.5mm(outside dia) mini "DC" power connectors or of any 2.5mm(ID)/5.5mm(OD) mini "DC" power connectors that will neatly fit on the ZX81/TS1000 board.
It may well be possible to glue one upside down (with it's legs/pins in the air) on the PCB and then run wires to link the relevant pins to the +9V and 0V tracks.
Normally it is recommended to use an adaptor cable, with a 2.1/5.5 power connector "in-line" type wired to a 3.5mm mono jack plug. There is a picture in a post about this somewhere.
To reduce the amount of unplugging/plugging back in, you could either add a reset button (requires soldering to the PCB), or add a in-line "torpedo" on/off switch in the low voltage power cable.
Again, there are posts that talk about both of these modifications.
And just a reminder, it is critical that any changes to the 9V DC wiring are checked to ensure the polarity is correct. If the polarity is incorrect, the 7805 voltage regulator will be destroyed and any expansion devices that use the +9V line will also be damaged.
When I'm on a proper computer later, I will add some links
This non-English site compares a ZX81 vs. a TS1000 including pictures.
Mark
ZX81 Variations
ZX81 Chip Pin-outs
ZX81 Video Transistor Buffer Amp
Standby alert
There are four lights!
Step up to red alert. Sir, are you absolutely sure? It does mean changing the bulb
Looking forward to summer later in the year.
ZX81 Chip Pin-outs
ZX81 Video Transistor Buffer Amp
Standby alert
There are four lights!
Step up to red alert. Sir, are you absolutely sure? It does mean changing the bulb
Looking forward to summer later in the year.
Re: Replace jacks in TS1000
So I've just installed the power jack into the 9V DC, but I'm getting a weird video mode where the video would screw up and would "beep" (I know TS1000s don't make sounds) every second, did I actually put it backwards and destroying the voltage regulator as I type this post?
UPDATE: This reply is also in a new post in greater detail:
www.sinclairzxworld.com/viewtopic.php?f=7&t=1558
UPDATE: This reply is also in a new post in greater detail:
www.sinclairzxworld.com/viewtopic.php?f=7&t=1558
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