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Dead instrument cluster new owner - please help

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Old 02-22-21, 08:16 AM
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Update: I cleaned up all the screws and the connectors at the back of the flexy board and I bent the tabs outward to make better connection with the harness connectors. I reconnected the cluster, started the engine and all three small gauges fuel, oil and coolant temperature work fine. Then I connected a wire to the +12 screw of the tacho and connected the other end to B+ but no luck, the tacho needs servicing. If anyone has a spare tacho, just so I can check the signal is ok, I will return it in the same condition. Would really appreciate it. Attached are few picture of the working gauges and the


back connectors.
Old 02-22-21, 08:18 AM
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I think I am going to try repair odometer, speedo and tacho circuit board, I found a very good blog post how to do it and I am not lacking soldering skills:

https://www.rx7club.com/3rd-generati.../#post12213800
Old 02-22-21, 10:28 AM
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BC Automatic Example

Here are some pics of my 1992 Type X cluster. Note the lights for the automatic position indicator.



Old 02-22-21, 09:15 PM
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Originally Posted by Redbul
Here are some pics of my 1992 Type X cluster. Note the lights for the automatic position indicator.
Hey if thats your spare could i borrow it to test my harness?

Last edited by rade95; 02-23-21 at 08:22 AM.
Old 02-22-21, 10:24 PM
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Sorry. That picture was 5 years ago. I took out the tach to trade it to a V8 guy.

Old 02-24-21, 07:27 PM
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BC On the menu

Top to bottom, left to right:

CdnDM Lhd Manual
JDM Rhd Autol
JDM Rhd Manual
JDM Rhd 99 Tac Conversion (w/boost gauge)
CdnDM Lhd Manual
USDM Lhd Auto
USDM Lhd Auto
USDM LHD Manual

Bottom
JDM Rhd ELRacing White Face conversion



All the above are untested and some have corroded flexi-boards or burned out odometers. I am curious how many complete working units can come from this collection.
Old 02-24-21, 07:34 PM
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Originally Posted by rade95
I think I am going to try repair odometer, speedo and tacho circuit board, I found a very good blog post how to do it and I am not lacking soldering skills:

https://www.rx7club.com/3rd-generati.../#post12213800
If your effort fails send it to Mike at Zepco Richardson Texas. He has repaired a half dozen for me
Old 02-25-21, 10:46 AM
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Originally Posted by Redbul
Top to bottom, left to right:

CdnDM Lhd Manual
JDM Rhd Autol
JDM Rhd Manual
JDM Rhd 99 Tac Conversion (w/boost gauge)
CdnDM Lhd Manual
USDM Lhd Auto
USDM Lhd Auto
USDM LHD Manual

Bottom
JDM Rhd ELRacing White Face conversion



All the above are untested and some have corroded flexi-boards or burned out odometers. I am curious how many complete working units can come from this collection.
Hey Redbul, I would be happy to clean and test them for you, since my harness is open and looking for a cluster PM me if you are willing to send them over to me for testing.
Old 02-25-21, 10:48 AM
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Originally Posted by tomsn16
If your effort fails send it to Mike at Zepco Richardson Texas. He has repaired a half dozen for me
Thanks for the info.
Old 03-06-21, 03:14 AM
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Update: Nine gets you Seven

Sent the collection to one of the specialists named above. He was able to recover seven fully functioning units out of the nine, plus a collection of working gauges from the remaining two that could not be fully rebuiilt.

This is a terrific result and very encouraging for anyone thinking of fixing a "dead" cluster.

Stay tuned.
Old 03-06-21, 11:40 AM
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Originally Posted by Redbul
Sent the collection to one of the specialists named above. He was able to recover seven fully functioning units out of the nine, plus a collection of working gauges from the remaining two that could not be fully rebuiilt.

This is a terrific result and very encouraging for anyone thinking of fixing a "dead" cluster.

Stay tuned.
Good for you. Out of curiosity what are you going to do with so many clusters? I sent mine to Michael Gagne and in the meantime i bought a spare JDM one to match the car i have. Now also looking into digital options for my PFC ECU as well as hand commander OLED replacement.
Old 03-06-21, 11:54 AM
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MG has an upgrade for PFC commander screens.

The replacement screen has a brightness setting.




Old 03-19-21, 11:02 PM
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I'm kind-of late to this party but I had the same problem. Most importantly the odometer (~45k) was broke and I nearly had a heart attack. Found an article about replacing the caps (same thing happens with TVs Stereos, etc). After doing that the cluster came back to life.
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