Lenny,
How OLD is this thing?! Some fluorescent light ballasts from the 1980s
and earlier had PCBs in them and I ain't talkin' printed circuit boards
here!
Bev
RIM
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Terry L. Munson
Sent: Friday, May 29, 2009 4:11 PM
To: [log in to unmask]
Subject: Re: [TN] lighting ballast encapsulant removal
Lenny
I would suggest a different non-chemical approach by freezing the
ballast
and then chipping or cutting the frozen pitch material to get to the
surface
for Failure Analysis. We have found that pitch can be contaminated and
cause leakage and corrosion problems. We have also found that
capacitors can
leak and the electrolyte will dissolve the material and cause leakage
and
corrosion problems. If you have solder joint problems then this
approach
works well to investigate the joint quality as well. If you have an
question
please call.
Terry Munson
765-457-8095
In a message dated 5/29/2009 2:01:42 P.M. Eastern Daylight Time,
[log in to unmask] writes:
We have a lighting ballast in for failure analysis and arent sure how
to
get the encapsulant "tar" from it?
This is a lighting ballast and we have the metal covers removed and are
left with a ballast assy built on a pcb, and covered in a thick,
black,
semi-pliable, tar-like encapsulant.
The tar-like encapsualant smells just like roofing tar. If you lay it
on
a piece of notepaper it stains it just like roofing tar. It can be
peeled
away just like a roofing tar. We are afraid of poking too much and
damaging components or circuits. Anybody have experience with it? - and
know
what it is? and how to let it soak in a pan of something and rinse
this stuff
of instead? Better ideas?
Thanks in advance,
Lenny Carter
Design Engineer
ERG, Inc.
ph (607) 754-9187 x3063
www.ergpower.com
---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 15.0
To unsubscribe, send a message to [log in to unmask] with following text
in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt or (re-start) delivery of Technet send e-mail to
[log in to unmask]: SET Technet NOMAIL or (MAIL)
To receive ONE mailing per day of all the posts: send e-mail to
[log in to unmask]: SET Technet Digest
Search the archives of previous posts at:
http://listserv.ipc.org/archives
Please visit IPC web site
http://www.ipc.org/contentpage.asp?Pageid=4.3.16
for additional information, or contact Keach Sasamori at [log in to unmask]
or
847-615-7100 ext.2815
-----------------------------------------------------
**************We found the real 'Hotel California' and the 'Seinfeld'
diner. What will you find? Explore WhereItsAt.com.
(http://www.whereitsat.com/#/music/all-spots/355/47.796964/-66.374711/2/
Youve-Found-Where-Its-At?ncid=eml
cntnew00000007)
---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 15.0
To unsubscribe, send a message to [log in to unmask] with following text
in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt or (re-start) delivery of Technet send e-mail to
[log in to unmask]: SET Technet NOMAIL or (MAIL)
To receive ONE mailing per day of all the posts: send e-mail to
[log in to unmask]: SET Technet Digest
Search the archives of previous posts at:
http://listserv.ipc.org/archives
Please visit IPC web site
http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional
information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100
ext.2815
-----------------------------------------------------
---------------------------------------------------------------------
This transmission (including any attachments) may contain confidential information, privileged material (including material protected by the solicitor-client or other applicable privileges), or constitute non-public information. Any use of this information by anyone other than the intended recipient is prohibited. If you have received this transmission in error, please immediately reply to the sender and delete this information from your system. Use, dissemination, distribution, or reproduction of this transmission by unintended recipients is not authorized and may be unlawful.
---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 15.0
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL)
To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest
Search the archives of previous posts at: http://listserv.ipc.org/archives
Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815
-----------------------------------------------------
|
