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Author Topic: FT-990 fan repair or replacement  (Read 4258 times)
GW4FRX
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Posts: 5




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« on: April 26, 2013, 12:39:07 PM »

The fan in my venerable FT-990 appears to have failed open-circuit. Yaesu (UK) has no spares stock and Yaesu (USA) are unhelpful. The Yaesu part number is M2090011. The original manufacturer appears to have been NMB and their part number was FCB34AC12 but it's NLA from them. It appears that this or a very similar fan was also made by Panasonic at some stage.

I’m extremely reluctant to part out or scrap this classic rig and would very much like to repair or replace the fan or motor but extensive Googling hasn’t suggested any possible sources. Can anyone suggest a source? Alternatively, does anyone know how to gain access to the motor PCB? In the hope of being able to repair or replace the motor I've dismantled the fan assembly but can't see how the motor itself comes apart.

Many thanks in advance.

73 John
GW4FRX


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K8POS
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Posts: 332


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« Reply #1 on: April 27, 2013, 05:38:06 PM »

Only reference i could find on it is here:
http://www.eham.net/ehamforum/smf/index.php?topic=74869.0
Looks like a squirrel cage type fan, maybe one of those car rear window defoggers they sell at the auto parts stores that have that type of fan in them would work?

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W8JX
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« Reply #2 on: April 27, 2013, 07:44:35 PM »

The Kenwood TS 140 and 680 use a squirrel cage blower maybe you could adapt parts from it.
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WB6BYU
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Posts: 13239




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« Reply #3 on: April 27, 2013, 08:07:26 PM »

There are lots of fans and blowers used in modern electronic equipment - see what
you can find at the local Disposals / Surplus shop.  Often you can read through a catalog
and find a replacement with similar dimensions, then work out some way to make it fit.
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