Duane Baker Posted September 17, 2019 Report Posted September 17, 2019 Flying Sunday cooling fan failed warning came on, Garmin shop or MSC? Quote
Marauder Posted September 17, 2019 Report Posted September 17, 2019 Flying Sunday cooling fan failed warning came on, Garmin shop or MSC? Garmin shop. I don’t think Garmin sells parts to a non-dealer. (I’m not sure they sell repair parts at all). Sent from my iPhone using Tapatalk Pro Quote
DonMuncy Posted September 17, 2019 Report Posted September 17, 2019 Prepare yourself. They have a flat rate (not cheap) to do any repair. Quote
ArtVandelay Posted September 17, 2019 Report Posted September 17, 2019 Don is correct, close to a $1000 if I remember correctly. I would call G directly to see what they say. Tom Quote
jetdriven Posted September 17, 2019 Report Posted September 17, 2019 I think the flat rate repair is 1250 for the GTN Quote
Bravoman Posted September 17, 2019 Report Posted September 17, 2019 I have a 650, does it have a built-in fan? Or does the cooling fan warning mean that it is overheating for some reason? Quote
ArtVandelay Posted September 17, 2019 Report Posted September 17, 2019 I have a 650, does it have a built-in fan? Or does the cooling fan warning mean that it is overheating for some reason? It has a fan, which you can hear if you turn on your avionics without the engine running. It may only run when required. 1 Quote
larrynimmo Posted September 17, 2019 Report Posted September 17, 2019 I thought the Garmin fan was part of the tray...not sure though Quote
Duane Baker Posted September 17, 2019 Author Report Posted September 17, 2019 I talked to my Garmin shop in Conroe, Tx. He said the fan is only there to keep the touch screen cool, not the radio itself. It's mounted on the rack, major take apart. He said don't worry about it, fix it when your in the panel for something else. Sooo I'll wait. 1 Quote
81X Posted September 21, 2019 Report Posted September 21, 2019 I’ve spoken to G about this issue as I had and very occasionally still do have the same warning on my 750. The fan is on the back of the tray which needs to be taken out to be replaced. If the unit begins to overheat, the screen dims and possibly the comm tx power may decrease depending on the heat level. Even in summer in SC, my screen hasn’t dimmed when the message came up. My plan is to get it replaced after the ads b craze opens up some shop time for some other avionics upgrades. Side note, I was able to tour some of the test equipment at Garmin when I was there- the ovens, freezers and lightning simulators they use to test the equipment are very cool. 1 Quote
larryb Posted September 21, 2019 Report Posted September 21, 2019 Electronics do not like heat. Heat will exponentially reduce life. If there is a problem with a fan I would fix it at the earliest opportunity. Quote
Jim Peace Posted September 30, 2020 Report Posted September 30, 2020 I got the message to: It came on when flying at 6000 feet NJ to SC for fuel stop then on the second leg it was not there..... installed about 2.5 years ago..... What do you make of it not being there anymore? I searched the internet and this apparently happens a lot..... Cant have a reliable fan in this century? Quote
ArtVandelay Posted September 30, 2020 Report Posted September 30, 2020 If you ever have the avionics on without the engine you’ll notice the fan sounds like it is working at 100%. Doesn’t seem to be like computer fans that are adjusted based on need. Quote
PT20J Posted October 1, 2020 Report Posted October 1, 2020 When I used to design telco equipment, the specs required there be no cooling fans since the MTBF for fans was much lower than the rest of the electronics. You can imagine the issue at a large central office with an acre of equipment racks. If every box had a cooling fan, there would be thousands of them and probably multiple failures per day. Quite a trick to design for convection cooling with the possibility that your unit was mounted at the top of an 11' 6" telco rack with everything below heating up your box! Compared to that, the radio stack in an airplane is a piece of cake. The biggest issue is going to be heat soaking when the airplane has been sitting on a hot ramp in the summer for a few hours. In a J there is a central cooling fan (unless it's been removed) and it may be possible to direct a duct to blow air on the back of the GTN equipment tray. Skip 1 Quote
Warren Posted October 3, 2020 Report Posted October 3, 2020 The fan on a 650 is mounted to the back plate and is not integral to the unit. It is relatively easy to install a new fan...assuming you can get to the back plate. Quote
201Steve Posted April 6, 2022 Report Posted April 6, 2022 Anyone that’s had this issue, did it rectify itself or what did you end up doing…? Quote
carusoam Posted April 6, 2022 Report Posted April 6, 2022 Website fairy comes along and fixes some things… Stanby for the Big G fans to arrive… -a- Quote
carusoam Posted April 6, 2022 Report Posted April 6, 2022 Website fairy comes along and fixes some things… Stanby for the Big G fans to arrive… let’s invite @Jim Peace @Duane Baker and @Alan Fox (GTN cooling fan inop solutions….) -a- Quote
PT20J Posted April 7, 2022 Report Posted April 7, 2022 According to the maintenance manual, the fan screws to the GTN backplate and has a connector. Check with a Garmin dealer, but it appears field replaceable. 4 Quote
Alan Fox Posted April 10, 2022 Report Posted April 10, 2022 Fan is field replaceable , and available for purchase from any dealer... 3 Quote
carusoam Posted April 12, 2022 Report Posted April 12, 2022 @201Steve See the note from alan above… (GTN fan issue) Best regards, -a- 1 Quote
LANCECASPER Posted April 12, 2022 Report Posted April 12, 2022 On 9/17/2019 at 8:56 AM, Duane Baker said: Flying Sunday cooling fan failed warning came on, Garmin shop or MSC? https://sarasotaavionics.com/avionics/cooling-fan-gtn $95 https://www.steinair.com/product/gtn-cooling-fan/ $92 2 Quote
Will.iam Posted April 12, 2022 Report Posted April 12, 2022 Looks like a pc fan. Wonder if blowing off the dust with compressed air every annual would extend the life of the fan? Quote
Davo Posted April 19, 2022 Report Posted April 19, 2022 Same thing happened to me. I found the original part number at avnet.com and ordered 2 for about $12 each. Google part number SG40281B1-D05U-G99. Easy to replace and has worked perfectly since. 3 Quote
201Steve Posted April 20, 2022 Report Posted April 20, 2022 I have not seen the warning in the past 3 flights and I can hear it if I turn it on previous to startup so I’ll just be keeping an eye on it. Glad to know it’s a simple fix should it come back up! 1 Quote
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