1969 Dimmer Control Needed

[jash767]

Hello, 

I have a 1969 M20C. I need the complete Dimmer / Light test section. The one I have does not work.  Is anyone parting out their aircraft and have this part?

If so please contact me. 

Thank You,

Jason 

 

[Mooneymite]

What's wrong with the one you have?

Usually, it's just the pricey little fusses that need replacing.  If there's a reason one of them blew, a new dimmer panel will also fail.

Find the issue before you plug the new unit in.

 

 

[DanM20C]

I have the schematic for that box someplace.  Bill Wheat himself sent it to me.  If you or someone you know wants to trouble shoot and repair it send me a PM. I"ll see if I can find it.

I also have spares parts for every competent if you have trouble finding what you need.

Cheers,

Dan

[carusoam]

Mr. reaper, grim can be found here... @Alan Fox

The guy with the most Mooney parts can be found here... @acpartswhse

Best regards,

-a-

[Mooneymite]

Someone once posted an alternate source for those fuses...a significant saving.  Anyone?

[N201MKTurbo]

http://www.newark.com/bussmann-by-eaton/gmw-5/fuse-5a-125v-fast-acting/dp/19K5343

Here is the mil spec version:

https://www.mouser.com/ProductDetail/Bussmann-Eaton/FM01A125V5A?qs=sGAEpiMZZMsWYBHia0IPKV2ujPbOPWrVLXWYU8PcOKo%3d

It costs 4 times as much.

Edited May 25, 2018 by N201MKTurbo

[Jerry Pressley]

i have one in   c here if you don't find it elsewhere.  jerry pressley 

[Alan Fox]

I have brand new transistors for these..

[N201MKTurbo]

Is this what you are looking for?

 

[Aerodon]

I'd look at the max pulse / maxdim replacement units.  Gives you a chance to get rid of some old wiring, with correct paperwork and replace with modern technology.

Don

 

[SkyTrekker]

As it happens I'm having trouble with my 1970 E dimmer unit, too.  Welcome any suggestions/comments.

Everything in the unit functions except the panel lights do not come on at all when I rotate the dimmer/switch.  At one time I could see a very faint light coming from behind the panel when I turned the rotary dimmer switch on.   But now I don't even see that. 

Is it likely a problem with the dimmer/switch?  Or just a fuse or resistor/capacitor that is part of the assembly?  I've checked with Mooney and apparently the unit is not longer available, so I'm likely looking at finding a used unit somewhere or repairing mine, and to be honest, I'm not sure where to start.

Appreciate any suggestions.

Update: I just saw @Aerodon's post regarding max pulse/maxdim units.  So there is an alternate replacement option if repair is difficult?

-Sia

 

Edited May 26, 2018 by SkyTrekker

[SkyTrekker]

@Freemasm,

Thanks for the helpful information!  My control box is not like the one pictured in this post, but it is exactly like yours, as pictured in the post you referenced.  Will see what I can figure out.

-Sia

[Flitton]

Freemason - I have the light test/dimmer switch in my ‘69 Mooney just like in the faux wood dash picture! The light for the high output is not working. Any idea where to start? I got it to work once but I moved the box and I can’t get it to work again. Short somewhere?

[Flitton]

Yep, I have the push-to-test/dimmer switch box standard for a ‘69 to ‘74. The high vac light is the only light not working.