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Re: 8903B Gooey Crystal

 

EVERYTHING causes cancer here in California.? It's honestly a big joke because just about every store/business has the sign posted.

-Dave

On Thursday, March 17, 2022, 02:18:09 PM PDT, n8zmTWH@... <n8zmtwh@...> wrote:


Or it could have been the EPA nixed the good stuff. You know, this crap is known(?) to cause cancer to citizens of California!

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Tom, N8ZM

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From: [email protected] <[email protected]> On Behalf Of Jim Ford
Sent: Thursday, March 17, 2022 10:20 AM
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] 8903B Gooey Crystal

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Why a drop in quality in a later model?? There can only be one answer: some suit got a bonus for using a cheaper material.? Can I get a witness?

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Jim Ford

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Sent from my T-Mobile 4G LTE Device

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-------- Original message --------

From: Michael Kellett <mk@...>

Date: 3/17/22 2:21 AM (GMT-08:00)

Subject: Re: [HP-Agilent-Keysight-equipment] 8903B Gooey Crystal

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The Analyser's last known address was Cambridge, England. Damp, but cooler than Florida !

I made a mistake in my previous posts. I'm working on an 8903A and the 8903B at the same time. After I discovered the goo in the 8903B I picked up and photographed the pcb screen from the 8903A.
The 'A has brown sticky back foam which looks OK.
But when I looked at the pcb screen from the 'B all was revealed. It has black foam with clear signs of oozing and movement. I've pulled it off. I found the best way to get rid of the residue left on the screen was to warm it with a heat gun and rub it off with paper towels. (IPA turns it into disgusting sticky rubbery balls that are hard to remove.)

The pictures show the pcb screen from the 8903B. I wonder why HP went backwards in foam quality between the A and the B instruments.

MK
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