VR3 & Shearwater HUDIssue...

Ryan · 28th July 2007, 13:54

My VR3 seems to have become possessed....

I have it piggy backed on a one of the Shearwater cells, and it has operated without issue for 2 weeks. Last night, mid dive, the PO2 "stuck".

When I unplug the Fischer connector, mV drops from 72 to 0. When I unplug the cell, mV reading stays at 72. Turning the power on and off on the HUD has no affect?

Any ideas? Thanks in advance for all suggestions-

Barrie Law · 28th July 2007, 14:21

Quote: (Originally Posted by Ryan)

My VR3 seems to have become possessed....

I have it piggy backed on a one of the Shearwater cells, and it has operated without issue for 2 weeks. Last night, mid dive, the PO2 "stuck".

When I unplug the Fischer connector, mV drops from 72 to 0. When I unplug the cell, mV reading stays at 72. Turning the power on and off on the HUD has no affect?

Any ideas? Thanks in advance for all suggestions-

Hi Ryan,

Can you get any change in the reading if you do a flush O2 or Dil??

Ryan · 29th July 2007, 01:10

No, the output is fixed, and doesn't change if a cell is unhooked, or if the gas being analyzed is changed.

Rebreatherlab · 29th July 2007, 03:49

Sounds like seawater or salt crystals between + and - inside the VR3.

Andy

Quote: (Originally Posted by Ryan)

No, the output is fixed, and doesn't change if a cell is unhooked, or if the gas being analyzed is changed.

cj-62 · 29th July 2007, 03:51

Total stab in the dark but have you removed/replaced the VR3 battery? This can sometimes unload a stuck IO port.

Just a thought, good luck.

Rebreatherlab · 29th July 2007, 03:52

Try unplugging the VR battery for a few minutes, then try again.
I just had a brand new VR show altitude -70.000 m on boot up and then after air cal it showed AIR 21% AND PO2 0.17 BAR?!?!

The only thing that helped was to unplug the battery and start over. No it's fine.

Andy

Quote: (Originally Posted by Ryan)

My VR3 seems to have become possessed....

I have it piggy backed on a one of the Shearwater cells, and it has operated without issue for 2 weeks. Last night, mid dive, the PO2 "stuck".

When I unplug the Fischer connector, mV drops from 72 to 0. When I unplug the cell, mV reading stays at 72. Turning the power on and off on the HUD has no affect?

Any ideas? Thanks in advance for all suggestions-

TR300 · 29th July 2007, 11:29

Hi Ryan,

did you have the VR3 with the 7pin Fisher ?
on the 7pin Fischer there ist on one pin a Batterycurrent from about 5 Volts (to supply external devices). Wenn some Water (expect saltwater) comes on the plug there should be an shorten from the current pin to any other pin (also the sensor inlet) and this is enough to get the reading stuck. best is to dry and clean the plugs and use some kind of contact cleaning spray. Sometimes you see the current plug runs black.

Holger

Barrie Law · 29th July 2007, 12:27

Quote: (Originally Posted by Ryan)

No, the output is fixed, and doesn't change if a cell is unhooked, or if the gas being analyzed is changed.

Hi Ryan,

I would suggest cleaning your I/O port connectors with some white vinegar or as Holger mentioned some contact cleaning spray.

Also check the lead connections and clean them if necessary you should also inspect the Oxygen Sensor pins and the lead connections for any signs of 'green' corrosion that would indicate water ingress.

As you mention you have already left the battery out but this works best if you leave the battery out for at least 24 hours, although you should download any dive info you wish to keep before removing the battery because it will be lost when the battery is removed.

Ryan · 31st July 2007, 19:38

Thanks for all the help guys, I really appreciate it.

Desoldered the Shearwater HUD, didn't work.

Tried resetting the I/O port by leaving the battery out overnight, didn't work.

Tried cleaning contacts w/ deoxit, didn't work.

Went to Dive Rite Express and tried another cable, which functions properly, so the short is in the cable.

There has definitely been some water ingress in the connector. I keep cameras dry for a living, but this little Fischer connector is humbling...

Ryan · 11th August 2007, 21:57

First of all, thanks again for all the helpful replies. I appreciate everyone's input.

A new cable has rectified this issue, and I'm back w/ live Po2.

28th July 2007, 13:54	#1 (permalink)
Ryan New Member Current Rebreather/s: rEvo Pelagian Other Rebreather/s: Not Bought Yet Inspiration Classic Sport Kiss Classic Kiss rEvo Pelagian Join Date: Jul 2005 Location: On the edge of the gulf stream! Posts: 73	VR3 & Shearwater HUDIssue... My VR3 seems to have become possessed.... I have it piggy backed on a one of the Shearwater cells, and it has operated without issue for 2 weeks. Last night, mid dive, the PO2 "stuck". When I unplug the Fischer connector, mV drops from 72 to 0. When I unplug the cell, mV reading stays at 72. Turning the power on and off on the HUD has no affect? Any ideas? Thanks in advance for all suggestions- __________________ www.ReefPhoto.com 877-453-8927 954-537-0644
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28th July 2007, 14:21	#2 (permalink)
Barrie Law RebreatherWorld Sponsor Current Rebreather/s: Inspiration Classic Other Rebreather/s: Join Date: Jun 2005 Location: Ireland Posts: 726	Re: VR3 & Shearwater HUDIssue... Quote: (Originally Posted by Ryan) My VR3 seems to have become possessed.... I have it piggy backed on a one of the Shearwater cells, and it has operated without issue for 2 weeks. Last night, mid dive, the PO2 "stuck". When I unplug the Fischer connector, mV drops from 72 to 0. When I unplug the cell, mV reading stays at 72. Turning the power on and off on the HUD has no affect? Any ideas? Thanks in advance for all suggestions- Hi Ryan, Can you get any change in the reading if you do a flush O2 or Dil?? __________________ Barrie Law Rebreather World Store Supplying the Rebreather World Tel:US +19548403892 Fax:US+19543333792 Tel:EU+442071930496 Fax:EU+442077606344 Mobile+353876880628 Skype:barrielaw Email: barrie@rebreatherworldstore.com
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29th July 2007, 01:10	#3 (permalink)
Ryan New Member Current Rebreather/s: rEvo Pelagian Other Rebreather/s: Not Bought Yet Inspiration Classic Sport Kiss Classic Kiss rEvo Pelagian Join Date: Jul 2005 Location: On the edge of the gulf stream! Posts: 73	Re: VR3 & Shearwater HUDIssue... No, the output is fixed, and doesn't change if a cell is unhooked, or if the gas being analyzed is changed. __________________ www.ReefPhoto.com 877-453-8927 954-537-0644
(Offline)

29th July 2007, 03:49	#4 (permalink)
Rebreatherlab RebreatherWorld Sponsor Current Rebreather/s: Pelagian Other Rebreather/s: Not Bought Yet Classic Kiss Pelagian Join Date: Sep 2005 Location: Thailand Posts: 194	Re: VR3 & Shearwater HUDIssue... Sounds like seawater or salt crystals between + and - inside the VR3. Andy Quote: (Originally Posted by Ryan) No, the output is fixed, and doesn't change if a cell is unhooked, or if the gas being analyzed is changed. __________________ www.rebreatherlab.com
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29th July 2007, 03:51	#5 (permalink)
cj-62 New Member Current Rebreather/s: Sport Kiss Classic Kiss Other Rebreather/s: Sport Kiss Classic Kiss Join Date: Oct 2005 Location: USA-Oregon Posts: 17	Re: VR3 & Shearwater HUDIssue... Total stab in the dark but have you removed/replaced the VR3 battery? This can sometimes unload a stuck IO port. Just a thought, good luck.
(Offline)

29th July 2007, 03:52	#6 (permalink)
Rebreatherlab RebreatherWorld Sponsor Current Rebreather/s: Pelagian Other Rebreather/s: Not Bought Yet Classic Kiss Pelagian Join Date: Sep 2005 Location: Thailand Posts: 194	Re: VR3 & Shearwater HUDIssue... Try unplugging the VR battery for a few minutes, then try again. I just had a brand new VR show altitude -70.000 m on boot up and then after air cal it showed AIR 21% AND PO2 0.17 BAR?!?! The only thing that helped was to unplug the battery and start over. No it's fine. Andy Quote: (Originally Posted by Ryan) My VR3 seems to have become possessed.... I have it piggy backed on a one of the Shearwater cells, and it has operated without issue for 2 weeks. Last night, mid dive, the PO2 "stuck". When I unplug the Fischer connector, mV drops from 72 to 0. When I unplug the cell, mV reading stays at 72. Turning the power on and off on the HUD has no affect? Any ideas? Thanks in advance for all suggestions- __________________ www.rebreatherlab.com
(Offline)

29th July 2007, 11:29	#7 (permalink)
TR300 Home of the TR300 Current Rebreather/s: Other CCR Dolphin Other SCR Home Build Other Rebreather/s: Not Bought Yet Other CCR Dolphin Other SCR Home Build Join Date: Jan 2005 Location: Weinheim, Germany Posts: 194	Re: VR3 & Shearwater HUDIssue... Hi Ryan, did you have the VR3 with the 7pin Fisher ? on the 7pin Fischer there ist on one pin a Batterycurrent from about 5 Volts (to supply external devices). Wenn some Water (expect saltwater) comes on the plug there should be an shorten from the current pin to any other pin (also the sensor inlet) and this is enough to get the reading stuck. best is to dry and clean the plugs and use some kind of contact cleaning spray. Sometimes you see the current plug runs black. Holger __________________ If it makes bubbles it means its brocken Visit: www.tr300.com, Missions: www.rebreatherteam.de
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29th July 2007, 12:27	#8 (permalink)
Barrie Law RebreatherWorld Sponsor Current Rebreather/s: Inspiration Classic Other Rebreather/s: Join Date: Jun 2005 Location: Ireland Posts: 726	Re: VR3 & Shearwater HUDIssue... Quote: (Originally Posted by Ryan) No, the output is fixed, and doesn't change if a cell is unhooked, or if the gas being analyzed is changed. Hi Ryan, I would suggest cleaning your I/O port connectors with some white vinegar or as Holger mentioned some contact cleaning spray. Also check the lead connections and clean them if necessary you should also inspect the Oxygen Sensor pins and the lead connections for any signs of 'green' corrosion that would indicate water ingress. As you mention you have already left the battery out but this works best if you leave the battery out for at least 24 hours, although you should download any dive info you wish to keep before removing the battery because it will be lost when the battery is removed. __________________ Barrie Law Rebreather World Store Supplying the Rebreather World Tel:US +19548403892 Fax:US+19543333792 Tel:EU+442071930496 Fax:EU+442077606344 Mobile+353876880628 Skype:barrielaw Email: barrie@rebreatherworldstore.com
(Offline)

31st July 2007, 19:38	#9 (permalink)
Ryan New Member Current Rebreather/s: rEvo Pelagian Other Rebreather/s: Not Bought Yet Inspiration Classic Sport Kiss Classic Kiss rEvo Pelagian Join Date: Jul 2005 Location: On the edge of the gulf stream! Posts: 73	Re: VR3 & Shearwater HUDIssue... Thanks for all the help guys, I really appreciate it. Desoldered the Shearwater HUD, didn't work. Tried resetting the I/O port by leaving the battery out overnight, didn't work. Tried cleaning contacts w/ deoxit, didn't work. Went to Dive Rite Express and tried another cable, which functions properly, so the short is in the cable. There has definitely been some water ingress in the connector. I keep cameras dry for a living, but this little Fischer connector is humbling... __________________ www.ReefPhoto.com 877-453-8927 954-537-0644
(Offline)

11th August 2007, 21:57	#10 (permalink)
Ryan New Member Current Rebreather/s: rEvo Pelagian Other Rebreather/s: Not Bought Yet Inspiration Classic Sport Kiss Classic Kiss rEvo Pelagian Join Date: Jul 2005 Location: On the edge of the gulf stream! Posts: 73	Re: VR3 & Shearwater HUDIssue... First of all, thanks again for all the helpful replies. I appreciate everyone's input. A new cable has rectified this issue, and I'm back w/ live Po2. __________________ www.ReefPhoto.com 877-453-8927 954-537-0644
(Offline)

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