Anybody here work on HP 7905/7920 disk drives?

From: Joe R. <rigdonj_at_cfl.rr.com>
Date: Thu Jul 22 18:05:45 2004

At 03:36 PM 7/22/04 -0700, you wrote:
>Hi Joe
> Water doesn't even touch the goop I'm seeing. :(

  Water usually takes off almost all of the stuff that I've seen. It does
leave a speckled "crust" where the stuff has contacted metal. The crust
isn't thick. It looks sort of like you sprinked it with pepper. On these I
scapped the crust off with a knife blade. It came off easily but it ate
through the gold on the contacts and left spots of bare copper. I've been
told that the stuff gives off hydrofloric acid with it decomposes. That
stuff will eat through anything, including glass and gold.

  FWIW I've had to clean a lot of the black stuff old of old HP test
equipment accessory boxs and I don't think I've ever found any that water
didn't take out. Once water hits it the stuff just seems to turn into a
grainy powder. This isn't the same as the stuff that ICs used to be
stored in. That stuff also turns to goo but once it does I've never been
able to salvage an IC from it. It eats the legs off the ICs or weakens them
so much that you can't insert it into a socket without the legs breaking
off. I've had so much trouble with that stuff that when I find it I just
throw it all away and don't even try to salvage the parts.

   Joe


>Dwight
>
>
>>From: "Joe R." <rigdonj_at_cfl.rr.com>
>>
>> Soap and water usually cleans up the black foam. I'm not sure about this
>>green stuff. The black stuff practically dissolves in water.
>>
>> OH HELL! I'll go find out. Yeap. Water took MOST of it right off. I've
>>cleaned up everything and it's drying now. I'll try to take some pictures
>>tomorrow.
>>
>> Joe
>>
>>At 01:58 PM 7/22/04 -0700, you wrote:
>>>Hi
>>> What is the best way to clean this self-destructing foam.
>>>I've tried a couple of things without luck.
>>>Dwight
>>>
>>>
>>>>From: "Joe R." <rigdonj_at_cfl.rr.com>
>>>>
>>>>At 11:57 AM 7/22/04 -0500, you wrote:
>>>>>I'd be quite interested in these, as I'm sure some other people would be
>>>>>too. Any chance we could get pictures?
>>>>
>>>> They wouldn't do any good. There's pieces of green foam stuck all over
>>>>the parts.
>>>>
>>>> Joe
>>>>
>>>>
>>>>>
>>>>>Jay
>>>>>----- Original Message -----
>>>>>From: "Joe R." <rigdonj_at_cfl.rr.com>
>>>>>To: <cctalk_at_classiccmp.org>
>>>>>Cc: <dancohoe_at_oxford.net>
>>>>>Sent: Thursday, July 22, 2004 10:39 AM
>>>>>Subject: Anybody here work on HP 7905/7920 disk drives?
>>>>>
>>>>>
>>>>>> Went scrounging yesterday and found a small plastic box of what
looks
>>>>>> like HP disk drive test/alignment accessories. Parts include
07905-60049,
>>>>>> 07905-60039, 5061-1386, 07920-60030 and 07920-62421. Anybody need this
>>>>>> stuff? The box is filled with that old self-disintegrating foam so the
>>>>>> stuff will need to be cleaned up but it looks like it's in very good
>>>>>> condition (the box is in rough shape).
>>>>>>
>>>>>> Joe
>>>>>>
>>>>>
>>>>>
>>>>
>>>
>>>
>>>
>>
>
>
>
Received on Thu Jul 22 2004 - 18:05:45 BST