KISS PO2 display problems help!

scubagrunt · 28th November 2005, 06:12

Figured I would ask for help here vs. re-inventing the wheel. I just got my PO2 displays back from KISS for the upgraded plastic. I also had them replace the molex connectors. Here is my problem: I plugged the molex connectors into the three cells and closed up the kidney plate. First issue one cell was reading -0.01, okay that’s weird so with all three displays on I removed the kidney plate now problem two showed up, that is when I removed the pressure of the kidney plate another different display went to 0.00. I put the plate back on and it went back to 0.21, pulled off again and 0.00 put it on 0.21???
Back to problem one, I pulled the molex off and tested it on a new R22D, it worked but only if the molex was not pushed all the way on. So now I put it back on the older cell but not all the way and it works??? Now on to problem three the same cell that would only work under the pressure of the kidney plate (problem two from above) when I opened the calibration port to calibrate it goes to 0.03 from 0.22 and won’t calibrate, I close the calibration port and it goes back to 0.22?
So it seems like I have a few issues. Does anyone have any insite into whether this is a wiring issue or are the cells bad? I tested the cells under air and got 12.2 mvolts but they are a year old, but they do pass a linearity test.
Help!

abowie · 28th November 2005, 06:47

Send it back.

Once it's got wet they'll never believe it wasn't you that stuffed it up.

JonnyB · 28th November 2005, 06:47

First problem: You have the connectors on the wrong way, if you switch it you will not get the negative sign, though not a problem itself, i dove my kiss like that for 6 months, it might be irritating...

/Jonny

Scuttle · 28th November 2005, 07:30

Ok, I have the new upgrades as well ---similar problems only two for me
Johnny got No1 right-- remove & swap the + & - pins over in molex housing

the rest is wiring connections--poor contact somewhere--- I reckon.
broken wire or poorly crimped pins maybe

I had one of the new ones work well on surface, but at 5m would go on the blink every time.
Found the problem by squeezing the monitor, putting pressure on it would mimic the same as in water.
Mine was inside the display-- removed & reassembled circuit boards seems to have fixed it. -- er,thats to say I have not been back under with it yet, but I did try Squeezing the living daylights out of it & she a works beaut, mate.

Good luck with yours
You could always send them straight back they are good company to deal with.

Amen, Brother John

scubagrunt · 28th November 2005, 07:51

Quote: (Originally Posted by JonnyB)

First problem: You have the connectors on the wrong way, if you switch it you will not get the negative sign, though not a problem itself, i dove my kiss like that for 6 months, it might be irritating...

/Jonny

the molex only fits on one way, and even so it should read -0.21 not -0.00? right?

scubagrunt · 28th November 2005, 07:55

Quote: (Originally Posted by Scuttle)

Ok, I have the new upgrades as well ---similar problems only two for me
Johnny got No1 right-- remove & swap the + & - pins over in molex housing

the rest is wiring connections--poor contact somewhere--- I reckon.
broken wire or poorly crimped pins maybe

I had one of the new ones work well on surface, but at 5m would go on the blink every time.
Found the problem by squeezing the monitor, putting pressure on it would mimic the same as in water.
Mine was inside the display-- removed & reassembled circuit boards seems to have fixed it. -- er,thats to say I have not been back under with it yet, but I did try Squeezing the living daylights out of it & she a works beaut, mate.

Good luck with yours
You could always send them straight back they are good company to deal with.

Amen, Brother John

so what i'm hearing is it likely a display/wiring issue and not the cells???
it is just very irritating as i just got it back and now i'm down for a few more weeks..

seems quite irronic that i will have to use my eccr, vs my mccr, as i am eating crow yet again!!

***jradomski*** · 28th November 2005, 09:00

Quote: (Originally Posted by scubagrunt)

Figured I would ask for help here vs. re-inventing the wheel. I just got my PO2 displays back from KISS for the upgraded plastic. I also had them replace the molex connectors. Here is my problem: I plugged the molex connectors into the three cells and closed up the kidney plate. First issue one cell was reading -0.01, okay that’s weird so with all three displays on I removed the kidney plate now problem two showed up, that is when I removed the pressure of the kidney plate another different display went to 0.00. I put the plate back on and it went back to 0.21, pulled off again and 0.00 put it on 0.21???
Back to problem one, I pulled the molex off and tested it on a new R22D, it worked but only if the molex was not pushed all the way on. So now I put it back on the older cell but not all the way and it works??? Now on to problem three the same cell that would only work under the pressure of the kidney plate (problem two from above) when I opened the calibration port to calibrate it goes to 0.03 from 0.22 and won’t calibrate, I close the calibration port and it goes back to 0.22?
So it seems like I have a few issues. Does anyone have any insite into whether this is a wiring issue or are the cells bad? I tested the cells under air and got 12.2 mvolts but they are a year old, but they do pass a linearity test.
Help!

I have seen this problem using molex connectors.. it can be any of the following 3 problems..

1) pins not inserted fully (most likely)
2) pins inserted backwards (you should be able to pull them out pretty easily)
3) tension on contacts are too loose..

The pins can be easily removed with a pin extraction tool.. if you don't have one.. it takes a bit of practice removing the pins using something pointy

Dan · 28th November 2005, 09:01

Quote: (Originally Posted by Scuttle)

the rest is wiring connections--poor contact somewhere--- I reckon.
broken wire or poorly crimped pins maybe

I agree, it is probable poorly crimped pins. I had this problem when I change a bad circuit card. I had to squeeze the small pins to the wire really hard. If i do this again i probably solder them to the wire.
Be sure that the pins is really attach to the wire and that the pins is at the bottom of the molex.
On one molex one of the pins still force it self up through the molex every time I try to attach it to the sensor.

Quote: (Originally Posted by Scubagrunt)

when I opened the calibration port to calibrate it goes to 0.03 from 0.22 and won’t calibrate, I close the calibration port and it goes back to 0.22?

This could be a bad solder between the wire and the circuit card - talk to Jetsam!

//Dan

Scuttle · 28th November 2005, 09:11

Quote: (Originally Posted by scubagrunt)

the molex only fits on one way, and even so it should read -0.21 not -0.00? right?

On one side of the plastic molex , you should be able to see the pins inside, push down on the shiny tab & flick it backwards with a tiny screw driver or such. the pin will come out , do the same on the other side & swap over . just push them in until it clicks & give a gentle tug backwards to see if it is secure.

When the sensors are disconnected from the displays they should read .000

***jradomski*** · 28th November 2005, 09:13

Quote: (Originally Posted by Dan)

I agree, it is probable poorly crimped pins. I had this problem when I change a bad circuit card. I had to squeeze the small pins to the wire really hard. If i do this again i probably solder them to the wire.
Be sure that the pins is really attach to the wire and that the pins is at the bottom of the molex.
On one molex one of the pins still force it self up through the molex every time I try to attach it to the sensor.

This could be a bad solder between the wire and the circuit card - talk to Jetsam!

//Dan

molex pins should always be crimped NEVER soldered... soldering tends to cause the wire to break at the contact point.. Molex will tell you only crimp the pins..

If yours keeps popping out its either not fully inserted.. (it really has to be pressed from the back side to sit properly), or the little "tit" on the pin itself is missing.. replace the pin..

28th November 2005, 06:12	#1 (permalink)
scubagrunt CCR Diva Current Rebreather/s: Inspiration Classic Megalodon Classic Kiss Optima rEvo Other CCR Other SCR Other Rebreather/s: Not Bought Yet Inspiration Classic Inspiration Vision Evolution Megalodon Sport Kiss Classic Kiss Optima rEvo Other CCR Other SCR Join Date: May 2005 Location: Washington Posts: 441	KISS PO2 display problems help! Figured I would ask for help here vs. re-inventing the wheel. I just got my PO2 displays back from KISS for the upgraded plastic. I also had them replace the molex connectors. Here is my problem: I plugged the molex connectors into the three cells and closed up the kidney plate. First issue one cell was reading -0.01, okay that’s weird so with all three displays on I removed the kidney plate now problem two showed up, that is when I removed the pressure of the kidney plate another different display went to 0.00. I put the plate back on and it went back to 0.21, pulled off again and 0.00 put it on 0.21??? Back to problem one, I pulled the molex off and tested it on a new R22D, it worked but only if the molex was not pushed all the way on. So now I put it back on the older cell but not all the way and it works??? Now on to problem three the same cell that would only work under the pressure of the kidney plate (problem two from above) when I opened the calibration port to calibrate it goes to 0.03 from 0.22 and won’t calibrate, I close the calibration port and it goes back to 0.22? So it seems like I have a few issues. Does anyone have any insite into whether this is a wiring issue or are the cells bad? I tested the cells under air and got 12.2 mvolts but they are a year old, but they do pass a linearity test. Help! __________________ "No good deed goes unpunished!" www.silentscuba.com
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28th November 2005, 06:47	#2 (permalink)
abowie Fighting Girl Current Rebreather/s: Sport Kiss Other Rebreather/s: Join Date: May 2005 Location: Land of Oz Posts: 574	Re: KISS PO2 display problems help! Send it back. Once it's got wet they'll never believe it wasn't you that stuffed it up. __________________ Andrew Bowie Rebreather-friendly Buddy
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28th November 2005, 06:47	#3 (permalink)
JonnyB Johnny The Hatch Current Rebreather/s: MK 15.X Titan Other CCR Other SCR Home Build Other Rebreather/s: Not Bought Yet Inspiration Classic Megalodon Sport Kiss Classic Kiss Other CCR Other SCR Home Build Join Date: Jan 2005 Location: Sweden (Stockholm)/Cyprus(Ayia Napa) Posts: 992	Re: KISS PO2 display problems help! First problem: You have the connectors on the wrong way, if you switch it you will not get the negative sign, though not a problem itself, i dove my kiss like that for 6 months, it might be irritating... /Jonny
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28th November 2005, 07:30	#4 (permalink)
Scuttle 1 Grumpy ole skipper Current Rebreather/s: Classic Kiss Dolphin Other Rebreather/s: Dolphin Join Date: May 2005 Location: Jan Juc, Vic, Australia Posts: 242	Re: KISS PO2 display problems help! Ok, I have the new upgrades as well ---similar problems only two for me Johnny got No1 right-- remove & swap the + & - pins over in molex housing the rest is wiring connections--poor contact somewhere--- I reckon. broken wire or poorly crimped pins maybe I had one of the new ones work well on surface, but at 5m would go on the blink every time. Found the problem by squeezing the monitor, putting pressure on it would mimic the same as in water. Mine was inside the display-- removed & reassembled circuit boards seems to have fixed it. -- er,thats to say I have not been back under with it yet, but I did try Squeezing the living daylights out of it & she a works beaut, mate. Good luck with yours You could always send them straight back they are good company to deal with. Amen, Brother John
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28th November 2005, 07:51	#5 (permalink)
scubagrunt CCR Diva Current Rebreather/s: Inspiration Classic Megalodon Classic Kiss Optima rEvo Other CCR Other SCR Other Rebreather/s: Not Bought Yet Inspiration Classic Inspiration Vision Evolution Megalodon Sport Kiss Classic Kiss Optima rEvo Other CCR Other SCR Join Date: May 2005 Location: Washington Posts: 441	Re: KISS PO2 display problems help! Quote: (Originally Posted by JonnyB) First problem: You have the connectors on the wrong way, if you switch it you will not get the negative sign, though not a problem itself, i dove my kiss like that for 6 months, it might be irritating... /Jonny the molex only fits on one way, and even so it should read -0.21 not -0.00? right? __________________ "No good deed goes unpunished!" www.silentscuba.com
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28th November 2005, 07:55	#6 (permalink)
scubagrunt CCR Diva Current Rebreather/s: Inspiration Classic Megalodon Classic Kiss Optima rEvo Other CCR Other SCR Other Rebreather/s: Not Bought Yet Inspiration Classic Inspiration Vision Evolution Megalodon Sport Kiss Classic Kiss Optima rEvo Other CCR Other SCR Join Date: May 2005 Location: Washington Posts: 441	Re: KISS PO2 display problems help! Quote: (Originally Posted by Scuttle) Ok, I have the new upgrades as well ---similar problems only two for me Johnny got No1 right-- remove & swap the + & - pins over in molex housing the rest is wiring connections--poor contact somewhere--- I reckon. broken wire or poorly crimped pins maybe I had one of the new ones work well on surface, but at 5m would go on the blink every time. Found the problem by squeezing the monitor, putting pressure on it would mimic the same as in water. Mine was inside the display-- removed & reassembled circuit boards seems to have fixed it. -- er,thats to say I have not been back under with it yet, but I did try Squeezing the living daylights out of it & she a works beaut, mate. Good luck with yours You could always send them straight back they are good company to deal with. Amen, Brother John so what i'm hearing is it likely a display/wiring issue and not the cells??? it is just very irritating as i just got it back and now i'm down for a few more weeks.. seems quite irronic that i will have to use my eccr, vs my mccr, as i am eating crow yet again!! __________________ "No good deed goes unpunished!" www.silentscuba.com
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28th November 2005, 09:00	#7 (permalink)
*jradomski* Moderator Current Rebreather/s: Inspiration Classic Sport Kiss Optima rEvo Other CCR Other Rebreather/s: Inspiration Vision Evolution Megalodon Classic Kiss rEvo Other CCR Join Date: Mar 2005 Location: "Da" Bronx Posts: 3,115	Re: KISS PO2 display problems help! Quote: (Originally Posted by scubagrunt) Figured I would ask for help here vs. re-inventing the wheel. I just got my PO2 displays back from KISS for the upgraded plastic. I also had them replace the molex connectors. Here is my problem: I plugged the molex connectors into the three cells and closed up the kidney plate. First issue one cell was reading -0.01, okay that’s weird so with all three displays on I removed the kidney plate now problem two showed up, that is when I removed the pressure of the kidney plate another different display went to 0.00. I put the plate back on and it went back to 0.21, pulled off again and 0.00 put it on 0.21??? Back to problem one, I pulled the molex off and tested it on a new R22D, it worked but only if the molex was not pushed all the way on. So now I put it back on the older cell but not all the way and it works??? Now on to problem three the same cell that would only work under the pressure of the kidney plate (problem two from above) when I opened the calibration port to calibrate it goes to 0.03 from 0.22 and won’t calibrate, I close the calibration port and it goes back to 0.22? So it seems like I have a few issues. Does anyone have any insite into whether this is a wiring issue or are the cells bad? I tested the cells under air and got 12.2 mvolts but they are a year old, but they do pass a linearity test. Help! I have seen this problem using molex connectors.. it can be any of the following 3 problems.. 1) pins not inserted fully (most likely) 2) pins inserted backwards (you should be able to pull them out pretty easily) 3) tension on contacts are too loose.. The pins can be easily removed with a pin extraction tool.. if you don't have one.. it takes a bit of practice removing the pins using something pointy __________________ Joe Radomski CCR Trimix Instructor Trainer ANDI Instructor Trainer Director #10 All posts are personal opinions and DO NOT reflect any affiliated agency unless specifically stated.
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28th November 2005, 09:01	#8 (permalink)
Dan New Member Current Rebreather/s: Classic Kiss Other Rebreather/s: Join Date: May 2005 Location: SWEDEN Posts: 71	Re: KISS PO2 display problems help! Quote: (Originally Posted by Scuttle) the rest is wiring connections--poor contact somewhere--- I reckon. broken wire or poorly crimped pins maybe I agree, it is probable poorly crimped pins. I had this problem when I change a bad circuit card. I had to squeeze the small pins to the wire really hard. If i do this again i probably solder them to the wire. Be sure that the pins is really attach to the wire and that the pins is at the bottom of the molex. On one molex one of the pins still force it self up through the molex every time I try to attach it to the sensor. Quote: (Originally Posted by Scubagrunt) when I opened the calibration port to calibrate it goes to 0.03 from 0.22 and won’t calibrate, I close the calibration port and it goes back to 0.22? This could be a bad solder between the wire and the circuit card - talk to Jetsam! //Dan
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28th November 2005, 09:11	#9 (permalink)
Scuttle 1 Grumpy ole skipper Current Rebreather/s: Classic Kiss Dolphin Other Rebreather/s: Dolphin Join Date: May 2005 Location: Jan Juc, Vic, Australia Posts: 242	Re: KISS PO2 display problems help! Quote: (Originally Posted by scubagrunt) the molex only fits on one way, and even so it should read -0.21 not -0.00? right? On one side of the plastic molex , you should be able to see the pins inside, push down on the shiny tab & flick it backwards with a tiny screw driver or such. the pin will come out , do the same on the other side & swap over . just push them in until it clicks & give a gentle tug backwards to see if it is secure. When the sensors are disconnected from the displays they should read .000
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28th November 2005, 09:13	#10 (permalink)
*jradomski* Moderator Current Rebreather/s: Inspiration Classic Sport Kiss Optima rEvo Other CCR Other Rebreather/s: Inspiration Vision Evolution Megalodon Classic Kiss rEvo Other CCR Join Date: Mar 2005 Location: "Da" Bronx Posts: 3,115	Re: KISS PO2 display problems help! Quote: (Originally Posted by Dan) I agree, it is probable poorly crimped pins. I had this problem when I change a bad circuit card. I had to squeeze the small pins to the wire really hard. If i do this again i probably solder them to the wire. Be sure that the pins is really attach to the wire and that the pins is at the bottom of the molex. On one molex one of the pins still force it self up through the molex every time I try to attach it to the sensor. This could be a bad solder between the wire and the circuit card - talk to Jetsam! //Dan molex pins should always be crimped NEVER soldered... soldering tends to cause the wire to break at the contact point.. Molex will tell you only crimp the pins.. If yours keeps popping out its either not fully inserted.. (it really has to be pressed from the back side to sit properly), or the little "tit" on the pin itself is missing.. replace the pin.. __________________ Joe Radomski CCR Trimix Instructor Trainer ANDI Instructor Trainer Director #10 All posts are personal opinions and DO NOT reflect any affiliated agency unless specifically stated.
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