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Author Topic: Convert ISO Rapid I to ANSI. One problem.  (Read 2428 times)

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Offline SKD

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Convert ISO Rapid I to ANSI. One problem.
« on: Sun, 19 June 2016, 12:10:34 »
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« Last Edit: Sat, 02 September 2023, 06:20:36 by SKD »
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Offline suicidal_orange

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Re: Convert ISO Rapid I to ANSI. One problem.
« Reply #1 on: Sun, 19 June 2016, 16:42:52 »
D87 (I think - the one under H in your BACKSLASH) is missing - if you touch the green pad furthest from it to the top diode pad it should register.  If it does move D96 from ISO #~ to D87 and you're good to go :thumb:
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Offline SKD

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Re: Convert ISO Rapid I to ANSI. One problem.
« Reply #2 on: Sun, 19 June 2016, 18:03:30 »
I tried touching the pads you suggesting to the top diode pad but nothing registers. Could it be because the ISO Enter LED and pad is touching that green pad? It looks like the solder in that green pad is connected to the LED pad by a bit of solder.
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Offline suicidal_orange

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Re: Convert ISO Rapid I to ANSI. One problem.
« Reply #3 on: Sun, 19 June 2016, 18:14:08 »
Between the crazy circuit paths, labels on the PCB and your added text it's really not easy to see but if there is a short between an LED pad and a switch pad that's probably not going to help.  Looking at where that LED would be it seems inevitable though - if you clean all the solder off you can check if the pads touch, if they do it must be OK.

I guess if D87 was knocked off the pad could be damaged - try touching the left green pin to the top of D65.
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Offline SKD

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Re: Convert ISO Rapid I to ANSI. One problem.
« Reply #4 on: Mon, 20 June 2016, 05:58:56 »
Quote from: suicidal_orange on Sun, 19 June 2016, 18:14:08
Between the crazy circuit paths, labels on the PCB and your added text it's really not easy to see but if there is a short between an LED pad and a switch pad that's probably not going to help.  Looking at where that LED would be it seems inevitable though - if you clean all the solder off you can check if the pads touch, if they do it must be OK.

I guess if D87 was knocked off the pad could be damaged - try touching the left green pin to the top of D65.

Hmm no luck on that one as well. There was no D87 when I opened up the board. Should I try to take out the ISO Enter LED and try touching the D96 and D65? I only have a crappy solder sucker thing at the moment though. I should invest in a proper desoldering iron, if I can't convert the rapid i to ISO I was going to change the switches on my 60% so I do need one.
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Offline suicidal_orange

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Re: Convert ISO Rapid I to ANSI. One problem.
« Reply #5 on: Mon, 20 June 2016, 13:52:58 »
Just had another look and there's a populated R9EU and an unpopulated R3US - with those labels that looks like another thing to change.  It's probably a dummy 0 Ohm 'resistor', can you read what the tiny chip says?  If it's a 0 you can just solder the two pads rather than attempting to move it...

The conversion is definitely doable, just need to work out how!
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Offline SKD

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Re: Convert ISO Rapid I to ANSI. One problem.
« Reply #6 on: Mon, 20 June 2016, 17:17:58 »
Quote from: suicidal_orange on Mon, 20 June 2016, 13:52:58
Just had another look and there's a populated R9EU and an unpopulated R3US - with those labels that looks like another thing to change.  It's probably a dummy 0 Ohm 'resistor', can you read what the tiny chip says?  If it's a 0 you can just solder the two pads rather than attempting to move it...

The conversion is definitely doable, just need to work out how!

 :eek: Absolutely genius, it does indeed say 0 on that resistor! I'll give that a go tomorrow and report back!
« Last Edit: Mon, 20 June 2016, 17:32:15 by SKD »
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Offline SKD

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Re: Convert ISO Rapid I to ANSI. One problem.
« Reply #7 on: Tue, 21 June 2016, 13:37:45 »
I've tried soldering the R3US pads together then touching the suggested D96 and D65, but it the ANSI backslash still doesn't register. Also the keyboard behaves funny. The TAB, Q, W, E, R and T becomes permanently pressed in AquaKey and the backlighting is stuck on breathing mode, none of the backlight key combos change it and the other keys don't work in a text box anywhere.

Maybe someone can take a photo of their ANSI PCB so I can compared it to mine lol. It
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Offline suicidal_orange

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Re: Convert ISO Rapid I to ANSI. One problem.
« Reply #8 on: Tue, 21 June 2016, 14:54:22 »
You need to disconnect the EU resistor as well as connecting the US one otherwise you're connecting two rows together.  Not sure what that's got to do with the LEDs though...
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Offline SKD

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Re: Convert ISO Rapid I to ANSI. One problem.
« Reply #9 on: Wed, 22 June 2016, 12:55:54 »
Quote from: suicidal_orange on Tue, 21 June 2016, 14:54:22
You need to disconnect the EU resistor as well as connecting the US one otherwise you're connecting two rows together.  Not sure what that's got to do with the LEDs though...

I like you. It works when I remove R9EU, the ANSI backslash now registers in AquaKey! However removing R9EU transistor takes out the LED for the ISO Enter, but touching a LED to the ANSI backslash and ANSI Enter LED pads, the LED lights up so that's fine.

So now I just have to move D96 to D87 since D96 diode is for the ISO hash key won't be needed. Correct?
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Offline suicidal_orange

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Re: Convert ISO Rapid I to ANSI. One problem.
« Reply #10 on: Wed, 22 June 2016, 13:41:14 »
Well you won't be using the ISO enter so that LED stopping could be by design - a very clever design at that!

Move that diode and the mod should be done, well the easy bit anyway.  Don't forget diodes are directional :thumb:
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Offline SKD

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Re: Convert ISO Rapid I to ANSI. One problem.
« Reply #11 on: Wed, 22 June 2016, 16:19:35 »
Can't thank you enough! I have no idea how you managed to work things out just by that one simple picture, maybe you can read PCBs like ABC lol.

When I gather all the bits I need, plate, switches, LEDs and desoldering tools I will create a short guide for others if they want to convert theirs too  ;D
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