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Vanremog(at)aol.com
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 Posted: Sat Dec 08, 2007 7:45 pm Post subject: KLX-135A Internal Battery |
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Just today I realized that the Bendix/King KLX-135A has an internal battery with what is claimed to be a 3 to 5 year life. Mine just went TU after 9 years. It's supposed to give to a warning on the screen that data will be lost unless replaced within a week. Since I haven't flown for a few weeks, I guess the warning went unheeded.
At least I think that's what's going on here. My GPS was non-op as it lost its initial position and the radio freqs default to 120.00 on power up. I wasn't going to fiddle with it in the air so I just ignored it but it never did capture.
This prompts a few questions. Can anyone confirm my suspicions with the available evidence? Has anyone personally replaced this battery or is it absolutely necessary that it to be done by an avionics shop? I'm assuming that Bendix/King (Honeywell) won't sell me a replacement directly, so it's probably the latter. If anyone has had this done yet can you tell me what the $$ damage was?
I will probably just take it to LAC at the San Jose Jet Center on Tuesday.
-Thx
N1GV (RV-6A, Flying 872hrs, O-360-A1A, C/S, Silicon Valley)
hottest products and top money wasters of 2007.
[quote][b]
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d-burton(at)comcast.net
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| Posted: Sun Dec 09, 2007 6:52 am Post subject: KLX-135A Internal Battery |
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Hi Gary,
I can confirm that your KLX-135 has an internal lithium back-up battery. They usually are an off the shelf item. I’d be tempted to pull the cover and at least take a look at it. If it’s soldered to the board you will need a replacement with “tabs” or “leads”. (Flat or round) Most are available that way if you specify it. A quick search on the net should pull up a source for a replacement.
Good luck. Nine years was pretty good.
Dave
From: owner-rv-list-server(at)matronics.com [mailto:owner-rv-list-server(at)matronics.com] On Behalf Of Vanremog(at)aol.com
Sent: Saturday, December 08, 2007 7:40 PM
To: rv-list(at)matronics.com
Subject: Re: KLX-135A Internal Battery
Just today I realized that the Bendix/King KLX-135A has an internal battery with what is claimed to be a 3 to 5 year life. Mine just went TU after 9 years. It's supposed to give to a warning on the screen that data will be lost unless replaced within a week. Since I haven't flown for a few weeks, I guess the warning went unheeded.
At least I think that's what's going on here. My GPS was non-op as it lost its initial position and the radio freqs default to 120.00 on power up. I wasn't going to fiddle with it in the air so I just ignored it but it never did capture.
This prompts a few questions. Can anyone confirm my suspicions with the available evidence? Has anyone personally replaced this battery or is it absolutely necessary that it to be done by an avionics shop? I'm assuming that Bendix/King (Honeywell) won't sell me a replacement directly, so it's probably the latter. If anyone has had this done yet can you tell me what the $$ damage was?
I will probably just take it to LAC at the San Jose Jet Center on Tuesday.
-Thx
N1GV (RV-6A, Flying 872hrs, O-360-A1A, C/S, Silicon Valley)
hottest products and top money wasters of 2007.
[quote]
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denis.walsh(at)comcast.ne
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| Posted: Sun Dec 09, 2007 7:29 am Post subject: KLX-135A Internal Battery |
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AHA!
It is so seldom I am able to offer real experience to address problems.
I concur with most of your observations. I was surprised to find this battery is not a rechargeable one! It just sits there keeping the GPS catalog alive for years. I mention this to point out to you that it is not going to revive. Mine gave me warnings for some time before it croaked.
My KLX-135A gave up its battery ghost at around eleven years. I hope its replacement will last another 11.
I went over to the on field avionics shop, and ordered the battery, 31 bucks. It is about the circumference of a silver dollar but much thicker. It has three solder pins and solders in to a circuit board. This circuit board is several layers in to the guts. Not sure I would have ever found it; however I was born under a lucky star. While I was in the shop I noticed a KLX-135 on the bench getting its battery replaced!!
What the hell I took a correspondence course in electronics in 1970, so I ignored the shop owner's advice that I could not and should not do it myself.
Took about an hour. Works good.
Post script. Once it goes, it will take a looonnng time for the GPS to find itself, with or without a new battery. I recall around 40 minutes to an hour. As a possible precaution, you might leave it outside with power for an hour to see if it comes around. This would tell you if it is just the internal battery.
Post Post script. If he will do it for an hours labor, I would go for it, unless you have some credentials as a solderer with circuit board endorsement. You could encourage such an agreement by showing up with it in your hand so it is just bench work, IMHO.
Good luck.
On Dec 8, 2007, at 8:40 , Vanremog(at)aol.com (Vanremog(at)aol.com) wrote:
| Quote: | Just today I realized that the Bendix/King KLX-135A has an internal battery with what is claimed to be a 3 to 5 year life. Mine just went TU after 9 years. It's supposed to give to a warning on the screen that data will be lost unless replaced within a week. Since I haven't flown for a few weeks, I guess the warning went unheeded.
At least I think that's what's going on here. My GPS was non-op as it lost its initial position and the radio freqs default to 120.00 on power up. I wasn't going to fiddle with it in the air so I just ignored it but it never did capture.
This prompts a few questions. Can anyone confirm my suspicions with the available evidence? Has anyone personally replaced this battery or is it absolutely necessary that it to be done by an avionics shop? I'm assuming that Bendix/King (Honeywell) won't sell me a replacement directly, so it's probably the latter. If anyone has had this done yet can you tell me what the $$ damage was?
I will probably just take it to LAC at the San Jose Jet Center on Tuesday.
-Thx
N1GV (RV-6A, Flying 872hrs, O-360-A1A, C/S, Silicon Valley)
hottest products and top money wasters of 2007.
| Quote: |
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href="http://www.matronics.com/Navigator?RV-List">http://www.matronics.com/Navigator?RV-List
href="http://forums.matronics.com">http://forums.matronics.com
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[quote][b]
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Vanremog(at)aol.com
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| Posted: Sun Dec 09, 2007 10:35 am Post subject: KLX-135A Internal Battery |
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In a message dated 12/9/2007 7:32:01 A.M. Pacific Standard Time, denis.walsh(at)comcast.net writes:
| Quote: | Post Post script. If he will do it for an hours labor, I would go for it, unless you have some credentials as a solderer with circuit board endorsement. You could encourage such an agreement by showing up with it in your hand so it is just bench work, IMHO.
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==========================
Denis-
Cool. As it turns out I was trained exactly for this task by Uncle Sam back in my previous life as a GCA radar tech in the USAF, so have no problem at all doing the work. I work in the defense electronics business these days so we have all of the soldering and desoldering tools to do the work laying around in the lab. I will see if the shop can order a battery for me, or I'll pull it out and examine it to see if I can Google a replacement.
-Thx
N1GV (RV-6A, Flying 872hrs, O-360-A1A, C/S, Silicon Valley)
hottest products and top money wasters of 2007.
| | - The Matronics RV-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?RV-List |
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