开云体育

-----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Joey Mastrili via groups.io
Sent: Friday, December 18, 2020 8:10 PM
To: [email protected]
Subject: Re: [K1000-K1200] Thank you!


Please pardon me for the ignorant question, but does a faulty relay prevent the K1000 from booting?

My K1000 doesn't seem to complete the boot process. It powers up, then the screen goes blank and makes no sound, except for a cyclic clicking sound. I never thought of the relay as a possible culprit.

Thanks.

Joey


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On Saturday, December 19, 2020, 7:38 AM, Nicole Massey <nyyki@...> wrote:

Thanks.

Sent from my HAL 9000 in transit to Jupiter


-----Original Message-----
From: [email protected] <mailto:[email protected]> [mailto:[email protected] <mailto:[email protected]> ] On Behalf Of Dennis Spanogle (Mr. Kurlewin K1000.net)
Sent: Friday, December 18, 2020 5:26 PM
To: [email protected] <mailto:[email protected]>
Subject: Re: [K1000-K1200] Thank you!

Will do update K1000.net. Not soon, but will do.

Dennis

------ Original Message ------
From: "Nicole Massey" <nyyki@... <mailto:nyyki@...> >
To: [email protected] <mailto:[email protected]>
Sent: 12/18/2020 3:53:28 PM
Subject: Re: [K1000-K1200] Thank you!

>Let's get this on the website. And I'll start trying to find someone to do this on my units.
>
>Sent from my HAL 9000 in transit to Jupiter
>
>
>-----Original Message-----
>From: [email protected] <mailto:[email protected]> [mailto:[email protected] <mailto:[email protected]> ] On Behalf Of Brian M. via groups.io
>Sent: Friday, December 18, 2020 4:17 PM
>To: [email protected] <mailto:[email protected]>
>Subject: Re: [K1000-K1200] Thank you!
>
>Nicole,
>
>A suggestion on the P1 connector repair: In manufacturing, the holes for P1 in the power supply board were drilled almost twice the diameter they should be (maybe originally to accommodate a different connector, or the transformer wires?), so a lot of solder was used to bridge the gap to the pins. Multiple heating/cooling cycles, combined with differential expansion of materials, cause fatigue in the joint. As the joint fatigues, there's less solder making contact, causing it to heat even more. The cycle eventually breaks the connection completely.
>
>Instead of simply resoldering the pins (which just restarts the clock on the same problem), first remove all the solder from the pins, then wrap several turns of 24AWG bus wire around each pin on the foil side of the board, and resolder. This provides a much better connection than the original -- electrically, mechanically and thermally -- and since the late 90s, I've never had a call-back for this. Photos of a unit in process available, if someone wants them for clarification.
>
>I've had severe cases where heat from the pins has melted the connector. When that happens, I completely remove P1 and solder the transformer leads directly to the board. This also eliminates the original problem, but requires a bit more work than the fix above. The connector was for ease of assembly in the factory, anyway, so there's nothing lost by removing it.
>
>Hope this helps someone!
>
>
>Regards,
>
>Brian
>
>
>
>On 12/18/20 3:49 PM, Nicole Massey wrote:
>
>
> The two biggest issues with the modules are the P1 connector on the power supply and the relay.
> Turn the unit on. If nothing happens it's probably the P1. If you get black blocks it's likely to be the relay.
> First off, both of these repairs are covered on k1000.net. But if it's the relay give it a firm but not hard tap to knock the relay loose from the gunk clogging it up. Don't tap it hard enough to break anything. There are replacement instructions on the website.
> As to the P1 connector, this is the most common design flaw in the instruments. The power supply isn't fitted with enough heat conduction, so it causes the solder on the P1 connector to go fluid. David Brown used to tell folks to resolder the P1 connector every time they opened the case on one of these. I've got two GX modules in need of this repair. (I also have a GX that needs an OS upgrade, which the site will tell someone how to do and also provide all the binaries to burn into chips so you can upgrade the machines)
> Sent from my HAL 9000 in transit to Jupiter
> -----Original Message-----
> From: [email protected] <mailto:[email protected]> <mailto:[email protected] <mailto:[email protected]> > [mailto:[email protected] <mailto:[email protected]> ] On Behalf Of Frank D via groups.io
> Sent: Friday, December 18, 2020 10:52 AM
> To: [email protected] <mailto:[email protected]> <mailto:[email protected] <mailto:[email protected]> >
> Subject: [K1000-K1200] Thank you!
> Thank you Max, for getting this started.
> Maybe, over the winter, I can get my 1000PX working again. Having a group gives me a bit of inspiration!
> peace,
> Frank Dickinson
> 90 East Productions
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