?

Hi Don,

Good luck on your recasting. It must be a really difficult thing to get the right thickness.

I have damaged side pieces by removing them. I had better luck by starting the unpeel at the top or bottom edge and get that edge free before trying the other edge.

There is a similar problem removing and installing the rear plastic bracket on plugins. I have found that warming the part with a heat gun helps. Be careful not to overheat and deform. It is a dangerous thing to do but unsnapping cold 40 year old plastic is risky too.

Jerry Massengale

-----Original Message-----
From: donblack1au
To: TekScopes
Sent: Wed, Feb 27, 2013 3:11 am
Subject: [TekScopes] 7000 Series Interface Socket Cover Changing

?

Hello, I have a 7504 with several interface sockets for the plugins with missing covers. I have a 7603 board to get replacement covers from however I'd like some advice on removing them and replacing them on the 7504. The manual just says "snap the white covers off the side of the connector" and then "snap the covers back on". That sounds fine but with aged plastic that has a reputation for breaking if looked at too hard, I'm afraid any snapping might not be in the way Tektronix meant. So any advice on how to do this with minimum risk of breakage gratefully received. I think they un-clip from the side nearest the board, is this right? Also, in a couple of weeks I'll have a demonstration of plastic casting to reproduce parts and I'm going to see if it's possible to reproduce these covers. I guess one requirement is for a suitable casting plastic to be tough enough to flex and clip on without snapping I'll let you know what I find out.
Thanks, Don Black.

Thanks Jerry, that makes me feel so much more confident (but what I
feared). Can you tell me more on how you unpeel them and do you use any
tool for it.
Does anyone have a photo of a cover so I can see how it clips on (I
guess there's a lip that catches).

Don Black.

On 27-Feb-13 11:48 PM, jerry massengale wrote:

Hi Don,

Good luck on your recasting. It must be a really difficult thing to
get the right thickness.

I have damaged side pieces by removing them. I had better luck by
starting the unpeel at the top or bottom edge and get that edge free
before trying the other edge.

There is a similar problem removing and installing the rear plastic
bracket on plugins. I have found that warming the part with a heat gun
helps. Be careful not to overheat and deform. It is a dangerous thing
to do but unsnapping cold 40 year old plastic is risky too.


Jerry Massengale



-----Original Message-----
From: donblack1au <donald_black@...>
To: TekScopes <TekScopes@...>
Sent: Wed, Feb 27, 2013 3:11 am
Subject: [TekScopes] 7000 Series Interface Socket Cover Changing

Hello, I have a 7504 with several interface sockets for the plugins
with missing covers. I have a 7603 board to get replacement covers
from however I'd like some advice on removing them and replacing them
on the 7504. The manual just says "snap the white covers off the side
of the connector" and then "snap the covers back on". That sounds fine
but with aged plastic that has a reputation for breaking if looked at
too hard, I'm afraid any snapping might not be in the way Tektronix
meant. So any advice on how to do this with minimum risk of breakage
gratefully received. I think they un-clip from the side nearest the
board, is this right? Also, in a couple of weeks I'll have a
demonstration of plastic casting to reproduce parts and I'm going to
see if it's possible to reproduce these covers. I guess one
requirement is for a suitable casting plastic to be tough enough to
flex and clip on without snapping I'll let you know what I find out.
Thanks, Don Black.

?

Hi,

The white covers are curled in at the top and botton edge to give the snap on action. I do not have a cover handy at the moment but the curl is a bit less than 1/16 inch and forms a curl of maybe half a circle. When I can find it I use a dental pick with a hooked edge.

Jerry Massengale

-----Original Message-----
From: Don Black
To: TekScopes
Sent: Wed, Feb 27, 2013 7:08 am
Subject: Re: [TekScopes] 7000 Series Interface Socket Cover Changing

?

Thanks Jerry, that makes me feel so much more confident (but what I feared). Can you tell me more on how you unpeel them and do you use any tool for it.
Does anyone have a photo of a cover so I can see how it clips on (I guess there's a lip that catches).

Don Black.

On 27-Feb-13 11:48 PM, jerry massengale wrote:

?

Hi Don,

Good luck on your recasting. It must be a really difficult thing to get the right thickness.

I have damaged side pieces by removing them. I had better luck by starting the unpeel at the top or bottom edge and get that edge free before trying the other edge.

There is a similar problem removing and installing the rear plastic bracket on plugins. I have found that warming the part with a heat gun helps. Be careful not to overheat and deform. It is a dangerous thing to do but unsnapping cold 40 year old plastic is risky too.

Jerry Massengale

-----Original Message-----
From: donblack1au
To: TekScopes
Sent: Wed, Feb 27, 2013 3:11 am
Subject: [TekScopes] 7000 Series Interface Socket Cover Changing

?

Hello, I have a 7504 with several interface sockets for the plugins with missing covers. I have a 7603 board to get replacement covers from however I'd like some advice on removing them and replacing them on the 7504. The manual just says "snap the white covers off the side of the connector" and then "snap the covers back on". That sounds fine but with aged plastic that has a reputation for breaking if looked at too hard, I'm afraid any snapping might not be in the way Tektronix meant. So any advice on how to do this with minimum risk of breakage gratefully received. I think they un-clip from the side nearest the board, is this right? Also, in a couple of weeks I'll have a demonstration of plastic casting to reproduce parts and I'm going to see if it's possible to reproduce these covers. I guess one requirement is for a suitable casting plastic to be tough enough to flex and clip on without snapping I'll let you know what I find out.
Thanks, Don Black.

?

Don,

I don't know if it will be helpful to you, but I have uploaded some photos of my 7844 main interface board. One of the plugin sockets is missing a cover, so you can see where the cover snaps onto the top of the socket. There is a similar arrangement on the bottom.

I did not have any trouble gently prying a cover off of a donor scope starting at the top and gently working it off with my fingers.

Pics here:

Chris

--- In TekScopes@..., Don Black wrote:
>
> Thanks Jerry, that makes me feel so much more confident (but what I
> feared). Can you tell me more on how you unpeel them and do you use any
> tool for it.
> Does anyone have a photo of a cover so I can see how it clips on (I
> guess there's a lip that catches).
>
> Don Black.
>
> On 27-Feb-13 11:48 PM, jerry massengale wrote:
> >
> > Hi Don,
> >
> > Good luck on your recasting. It must be a really difficult thing to
> > get the right thickness.
> >
> > I have damaged side pieces by removing them. I had better luck by
> > starting the unpeel at the top or bottom edge and get that edge free
> > before trying the other edge.
> >
> > There is a similar problem removing and installing the rear plastic
> > bracket on plugins. I have found that warming the part with a heat gun
> > helps. Be careful not to overheat and deform. It is a dangerous thing
> > to do but unsnapping cold 40 year old plastic is risky too.
> >
> >
> > Jerry Massengale
> >
> >
> >
> > -----Original Message-----
> > From: donblack1au
> > To: TekScopes TekScopes@...>
> > Sent: Wed, Feb 27, 2013 3:11 am
> > Subject: [TekScopes] 7000 Series Interface Socket Cover Changing
> >
> > Hello, I have a 7504 with several interface sockets for the plugins
> > with missing covers. I have a 7603 board to get replacement covers
> > from however I'd like some advice on removing them and replacing them
> > on the 7504. The manual just says "snap the white covers off the side
> > of the connector" and then "snap the covers back on". That sounds fine
> > but with aged plastic that has a reputation for breaking if looked at
> > too hard, I'm afraid any snapping might not be in the way Tektronix
> > meant. So any advice on how to do this with minimum risk of breakage
> > gratefully received. I think they un-clip from the side nearest the
> > board, is this right? Also, in a couple of weeks I'll have a
> > demonstration of plastic casting to reproduce parts and I'm going to
> > see if it's possible to reproduce these covers. I guess one
> > requirement is for a suitable casting plastic to be tough enough to
> > flex and clip on without snapping I'll let you know what I find out.
> > Thanks, Don Black.
> >
> >
>

----- Original Message -----

From: Don Black

To: TekScopes@...

Sent: Wednesday, February 27, 2013 9:09 AM

Subject: Re: [TekScopes] Re: 7000 Series Interface Socket Cover Changing

?

Thank you Chris, that helps. Nice clear photos.

Don Black.

On 28-Feb-13 2:38 AM, chrismh_somenumber wrote:

?

Don,

I don't know if it will be helpful to you, but I have uploaded some photos of my 7844 main interface board. One of the plugin sockets is missing a cover, so you can see where the cover snaps onto the top of the socket. There is a similar arrangement on the bottom.

I did not have any trouble gently prying a cover off of a donor scope starting at the top and gently working it off with my fingers.

Pics here:

Chris

--- In TekScopes@..., Don Black wrote:
>
> Thanks Jerry, that makes me feel so much more confident (but what I
> feared). Can you tell me more on how you unpeel them and do you use any
> tool for it.
> Does anyone have a photo of a cover so I can see how it clips on (I
> guess there's a lip that catches).
>
> Don Black.
>
> On 27-Feb-13 11:48 PM, jerry massengale wrote:
> >
> > Hi Don,
> >
> > Good luck on your recasting. It must be a really difficult thing to
> > get the right thickness.
> >
> > I have damaged side pieces by removing them. I had better luck by
> > starting the unpeel at the top or bottom edge and get that edge free
> > before trying the other edge.
> >
> > There is a similar problem removing and installing the rear plastic
> > bracket on plugins. I have found that warming the part with a heat gun
> > helps. Be careful not to overheat and deform. It is a dangerous thing
> > to do but unsnapping cold 40 year old plastic is risky too.
> >
> >
> > Jerry Massengale
> >
> >
> >
> > -----Original Message-----
> > From: donblack1au
> > To: TekScopes TekScopes@...>
> > Sent: Wed, Feb 27, 2013 3:11 am
> > Subject: [TekScopes] 7000 Series Interface Socket Cover Changing
> >
> > Hello, I have a 7504 with several interface sockets for the plugins
> > with missing covers. I have a 7603 board to get replacement covers
> > from however I'd like some advice on removing them and replacing them
> > on the 7504. The manual just says "snap the white covers off the side
> > of the connector" and then "snap the covers back on". That sounds fine
> > but with aged plastic that has a reputation for breaking if looked at
> > too hard, I'm afraid any snapping might not be in the way Tektronix
> > meant. So any advice on how to do this with minimum risk of breakage
> > gratefully received. I think they un-clip from the side nearest the
> > board, is this right? Also, in a couple of weeks I'll have a
> > demonstration of plastic casting to reproduce parts and I'm going to
> > see if it's possible to reproduce these covers. I guess one
> > requirement is for a suitable casting plastic to be tough enough to
> > flex and clip on without snapping I'll let you know what I find out.
> > Thanks, Don Black.
> >
> >
>

?

Hi Don,

I posted some close up pictures of the side cover and connector body in a Photo album called "7000 backplane connector".

These are damaged parts from a 7000 extender repair.

The body of the backplane connector can not take any heat without melting, which as you can see, is what ruined these parts.

If you play with the connector and side cover, it is quite obvious that the edge of the side cover closest to the PCB is intended to go on last and come off first. You can take the side cover off from the front edge (edge furthest from the PCB) but?the side cover?is not happy about this method.

tom jobe...

?

?

?

?

?

?

?

----- Original Message -----

From: Don Black

To: TekScopes@...

Sent: Wednesday, February 27, 2013 9:09 AM

Subject: Re: [TekScopes] Re: 7000 Series Interface Socket Cover Changing

?

Thank you Chris, that helps. Nice clear photos.

Don Black.

On 28-Feb-13 2:38 AM, chrismh_somenumber wrote:

?

Don,

I don't know if it will be helpful to you, but I have uploaded some photos of my 7844 main interface board. One of the plugin sockets is missing a cover, so you can see where the cover snaps onto the top of the socket. There is a similar arrangement on the bottom.

I did not have any trouble gently prying a cover off of a donor scope starting at the top and gently working it off with my fingers.

Pics here:

Chris

--- In TekScopes@..., Don Black wrote:
>
> Thanks Jerry, that makes me feel so much more confident (but what I
> feared). Can you tell me more on how you unpeel them and do you use any
> tool for it.
> Does anyone have a photo of a cover so I can see how it clips on (I
> guess there's a lip that catches).
>
> Don Black.
>
> On 27-Feb-13 11:48 PM, jerry massengale wrote:
> >
> > Hi Don,
> >
> > Good luck on your recasting. It must be a really difficult thing to
> > get the right thickness.
> >
> > I have damaged side pieces by removing them. I had better luck by
> > starting the unpeel at the top or bottom edge and get that edge free
> > before trying the other edge.
> >
> > There is a similar problem removing and installing the rear plastic
> > bracket on plugins. I have found that warming the part with a heat gun
> > helps. Be careful not to overheat and deform. It is a dangerous thing
> > to do but unsnapping cold 40 year old plastic is risky too.
> >
> >
> > Jerry Massengale
> >
> >
> >
> > -----Original Message-----
> > From: donblack1au
> > To: TekScopes TekScopes@...>
> > Sent: Wed, Feb 27, 2013 3:11 am
> > Subject: [TekScopes] 7000 Series Interface Socket Cover Changing
> >
> > Hello, I have a 7504 with several interface sockets for the plugins
> > with missing covers. I have a 7603 board to get replacement covers
> > from however I'd like some advice on removing them and replacing them
> > on the 7504. The manual just says "snap the white covers off the side
> > of the connector" and then "snap the covers back on". That sounds fine
> > but with aged plastic that has a reputation for breaking if looked at
> > too hard, I'm afraid any snapping might not be in the way Tektronix
> > meant. So any advice on how to do this with minimum risk of breakage
> > gratefully received. I think they un-clip from the side nearest the
> > board, is this right? Also, in a couple of weeks I'll have a
> > demonstration of plastic casting to reproduce parts and I'm going to
> > see if it's possible to reproduce these covers. I guess one
> > requirement is for a suitable casting plastic to be tough enough to
> > flex and clip on without snapping I'll let you know what I find out.
> > Thanks, Don Black.
> >
> >
>

?

?

?

Indeed!? Very timely for me, I think.

?

I just bought a used 7k rigid extender () that appears to be missing these plastic side covers.? Can anyone verify if the connector on the 067-0589-00 rigid extender is the same as t hose used on the 7k mainframe backplane?

?

If so, does anyone have a spare pair of these covers they might part with for a reasonable price?

?

Thanks,

?

Tony

?

(By the way, I have been lurking on here for a couple of years now.? I think this is my first serious post.? Thanks to all of y ou for sharing your invaluable knowledge.? I am learning a lot!)

?

From: TekScopes@... [mailto:TekScopes@...] On Behalf Of keithostertag
Sent: Wednesday, February 27, 2013 7:11 PM
To: TekScopes@...
Subject: [TekScopes] Re: 7000 Series Interface Socket Cover Changing

?

?

Good photos Tom! Very helpful, useful addition to the archives!

Keith Ostertag

----- Original Message -----

From: Glydeck

To: TekScopes@...

Sent: Thursday, February 28, 2013 7:10 AM

Subject: Re: [TekScopes] Re: 7000 Series Interface Socket Cover Changing

?

Tom,

Great photos and an excellent addition to the documentation of the 7K scope.

Thanks!

George

On Feb 27, 2013, at 7:30 PM, "Tony Jacobson" <tonyman@...> wrote:

?

Indeed!? Very timely for me, I think.

I just bought a used 7k rigid extender () that appears to be missing these plastic side covers.? Can anyone verify if the connector on the 067-0589-00 rigid extender is the same as t hose used on the 7k mainframe backplane?

If so, does anyone have a spare pair of these covers they might part with for a reasonable price?

Thanks,

Tony

(By the way, I have been lurking on here for a couple of years now.? I think this is my first serious post.? Thanks to all of y ou for sharing your invaluable knowledge.? I am learning a lot!)

From: TekScopes@... [mailto:TekScopes@...] On Behalf Of keithostertag
Sent: Wednesday, February 27, 2013 7:11 PM
To: TekScopes@...
Subject: [TekScopes] Re: 7000 Series Interface Socket Cover Changing

?

Good photos Tom! Very helpful, useful addition to the archives!

Keith Ostertag