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Page Title:
REPAIR OF BROKEN THERMAL MOUNTING PLATE POWER OR GROUND TABS. |
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11-5820-919-40-1
WARNING
Encapsulate the jumper wire
as
5.
described in steps 6 thru 8.
Handling hot items presents
a serious injury potential.
WARNING
Asbestos gloves are required.
Adhesives are irritating to the
skin and eyes upon contact, and
10.
Allow the adhesive to gel for a
may emit harmful vapor.
Use
minimum of 1 hour at room temperature
only with adequate ventilation..
and then bake for 1 hour minimum at a
Avoid all skin and eye contact.
10 OF, or allow
temperature of 150
Use protective clothing such as
adhesive to air dry at room temperature
rubber gloves, apron and eye
for 24 hours. If adhesive is oven
Wash off immedi-
protection.
cured, allow it to cool at room temper-
.
ately any accidentally contami-
ature after removal from the oven.
nated skin area. Hand washing
facilities and eye wash foun-
tain should be provided. Do
REPAIR OF BROKEN THERMAL MOUNTING
not take internally.
PLATE POWER OR GROUND TABS.
Broken
thermal mounting plate power or ground
tabs may be repaired using copper jumper
Use any one of the Narmco Epoxy
6.
wire by performing `the following steps:
Adhesive Kits No. 3135 listed in table
If the frozen premix kit is used,
3-2.
Technical personnel familiar with
1.
allow it to thaw to room temperature
the function of the circuit must deter-
prior to use.
If either of the two-part
mine the two points to which the copper
kits is used, mix small, approximately
jumper wire is to be attached.
equal, quantities of Part A and Part B,
using a disposable aluminum cup for
mixing. Mix thoroughly.
Form the 26-gage insulated copper
2.
jumper wire to the designated points and
Bond the jumper by applying a
7.
cut to the required length (fig 3-9).
uniform coat of adhesive over the entire
length of the jumper wire. Do not use
Strip a distance of 1/4 to
3.
more adhesive than necessary to com-
5/16 inch from the wire ends.
pletely cover the jumper wire.
CAUTION
WARNING
Handling hot items presents a
The areas to be soldered must
serious injury potential.
be heated until the solder
Asbestos gloves are required.
flows. Overheating can dam-
age the board or nearby com-
ponents. The wires being
8. Allow the adhesive to gel for
soldered must not be allowed
1 hour minimum at room temperature and
to move in relation to one
then bake for 1 hour minimum at tem-
another until the solder has
perature of 150
10 *F or allow adhesive
completely solidified.
to air dry at room temperature for
24 hours minimum. If adhesive is oven
cured, allow it to cool at room temper-
Solder each end of the jumper wire
4.
ature after removal from the oven.
to the selected pads.
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