Meter "Repair" on a Pentax MX

Todd Adamson · 07-24-2011, 06:56 PM - **2 Likes**

I just managed to fix an issue I was having with the MX meter, so I detailed it in a blog post, in hopes that it might actually help someone in the future.

Pentax MX Meter Fix

bobD · 07-25-2011, 02:05 AM

Thanks for that !.
My MX meter has been intermittent for all the time I have owned it. (7 years)
Guess I have no excuse now but to fix it....

Todd Adamson · 07-25-2011, 11:57 AM

Glad it was "helpful," Bob.

Ratmagiclady · 07-25-2011, 01:28 PM

Originally posted by bobD

Thanks for that !.
My MX meter has been intermittent for all the time I have owned it. (7 years)
Guess I have no excuse now but to fix it....

Intermittency is a 'good problem to have:' it most likely means no more than a bad connection.

bobD · 07-25-2011, 08:26 PM

Originally posted by Ratmagiclady

Intermittency is a 'good problem to have:' it most likely means no more than a bad connection.

Yes, though intermittent faults always encourage me to temporary repair by 'percussive maintenance '...

... and because that is often successful I don't get around to a proper fix.

When things downright don't work then I am quick to reach for the tools and go hunting for smoke.

Todd Adamson · 07-26-2011, 06:02 AM

LOL @ 'percussive maintenance.'

**grhazelton** · 07-27-2011, 12:16 PM

Todd -

Well, I thought you had found the answer to my MX problem, but.... My meter works fine, but the button cells are drained within a week or so. This problem surfaced after I'd used the camera for several years; an Atlanta area shop tried twice to fix it. I ran across Todd's fix a year or so ago, but checking with a VOM shows that the contacts open and close properly.

Any MX users out there have any other ideas, or do I send it to Eric, The Pentax Man?

Blue · 07-28-2011, 04:05 PM

Originally posted by Todd Adamson

LOL @ 'percussive maintenance.'

I believe Pentax recently brought that procedure back for the shutter on the K-5.

Rusticon · 07-29-2011, 02:57 AM

You've just made it possible for me to fix the last functional fault on my chrome MX! Not a bad return on a $30 ebay purchase. Good instructions, well done!

JDaughtry · 08-07-2011, 07:51 PM

Thanks for the great guide Todd! my newly acquired MX seems to be chewing through power so this might just solve the problem.

acrollet · 08-07-2011, 08:38 PM

Originally posted by Todd Adamson

LOL @ 'percussive maintenance.'

otherwise known as the "technical tap" :-D

07-24-2011, 06:56 PM - 2 Likes	#1
Todd Adamson Veteran Member Join Date: Oct 2010 Location: Iowa Posts: 722	Meter "Repair" on a Pentax MX I just managed to fix an issue I was having with the MX meter, so I detailed it in a blog post, in hopes that it might actually help someone in the future. Pentax MX Meter Fix

07-29-2011, 02:57 AM	#9
Rusticon New Member Join Date: Jul 2010 Location: Wilts Photos: Gallery Posts: 5	The fix works! You've just made it possible for me to fix the last functional fault on my chrome MX! Not a bad return on a $30 ebay purchase. Good instructions, well done!

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07-25-2011, 02:05 AM	#2
bobD Pentaxian Join Date: Nov 2008 Location: Waikikamukau Photos: Albums Posts: 1,248	Thanks for that !. My MX meter has been intermittent for all the time I have owned it. (7 years) Guess I have no excuse now but to fix it....

07-25-2011, 11:57 AM	#3
Todd Adamson Veteran Member Join Date: Oct 2010 Location: Iowa Posts: 722 Original Poster	Glad it was "helpful," Bob.

07-25-2011, 01:28 PM	#4
Ratmagiclady Veteran Member Join Date: Nov 2008 Location: GA Photos: Gallery \| Albums Posts: 13,563	Originally posted by bobD Thanks for that !. My MX meter has been intermittent for all the time I have owned it. (7 years) Guess I have no excuse now but to fix it.... Intermittency is a 'good problem to have:' it most likely means no more than a bad connection.

07-25-2011, 08:26 PM	#5
bobD Pentaxian Join Date: Nov 2008 Location: Waikikamukau Photos: Albums Posts: 1,248	Originally posted by Ratmagiclady Intermittency is a 'good problem to have:' it most likely means no more than a bad connection. Yes, though intermittent faults always encourage me to temporary repair by 'percussive maintenance '... ... and because that is often successful I don't get around to a proper fix. When things downright don't work then I am quick to reach for the tools and go hunting for smoke.

07-26-2011, 06:02 AM	#6
Todd Adamson Veteran Member Join Date: Oct 2010 Location: Iowa Posts: 722 Original Poster	LOL @ 'percussive maintenance.'

07-27-2011, 12:16 PM	#7
grhazelton Loyal Site Supporter Join Date: Jul 2007 Location: Jonesboro, GA Photos: Albums Posts: 1,972	Todd - Well, I thought you had found the answer to my MX problem, but.... My meter works fine, but the button cells are drained within a week or so. This problem surfaced after I'd used the camera for several years; an Atlanta area shop tried twice to fix it. I ran across Todd's fix a year or so ago, but checking with a VOM shows that the contacts open and close properly. Any MX users out there have any other ideas, or do I send it to Eric, The Pentax Man?

07-28-2011, 04:05 PM	#8
Blue Moderator Site Supporter Join Date: Jun 2008 Location: Florida Hill Country Photos: Gallery \| Albums Posts: 17,377	Originally posted by Todd Adamson LOL @ 'percussive maintenance.' I believe Pentax recently brought that procedure back for the shutter on the K-5.

08-07-2011, 07:51 PM	#10
JDaughtry New Member Join Date: Jul 2011 Location: Adelaide, SA Posts: 11	Thanks for the great guide Todd! my newly acquired MX seems to be chewing through power so this might just solve the problem.

08-07-2011, 08:38 PM	#11
acrollet Veteran Member Join Date: Dec 2009 Location: USA Photos: Gallery \| Albums Posts: 351	Originally posted by Todd Adamson LOL @ 'percussive maintenance.' otherwise known as the "technical tap" :-D

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