Philips MAGNAVOX 20MC4304 Service Manual page 92

b. Affix the wire to a workbench or solid mounting
point, as shown in Fig. S-1-5.
c. Pull up on the wire as the solder melts so as to lift
the IC leads from the CBA contact pads, while
heating the pins using a fine tip soldering iron or
hot air blower.
Note:
When using a soldering iron, care must be taken
to ensure that the Flat Pack - IC is not being held
by glue, or when it is removed from the CBA, it
may be damaged if force is used.
2. Installation
a. Using desoldering braid, remove the solder from
the foil of each pin of the Flat Pack - IC on the CBA,
so you can install a replacement Flat Pack - IC
more easily.
b. The "I" mark on the Flat Pack - IC indicates pin 1
(See Fig. S-1-6). Make sure this mark matches the
1 on the CBA when positioning for installation.
Then pre - solder the four corners of the Flat Pack-
IC (See Fig. S-1-7).
c. Solder all pins of the Flat Pack - IC. Make sure that
none of the pins have solder bridges.
CBA
Masking
Tape
Tweezers
Fig. S-1-1
Hot-air
Flat Pack-IC
Desoldering
Machine
Flat Pack-IC
Fig. S-1-2
1-4-2
Desoldering Braid
Flat Pack-IC
Soldering Iron
Fine Tip
Soldering Iron
Hot Air Blower
To Solid
Mounting Point
Fig. S-1-3
Sharp
Pin
Fig. S-1-4
or
Iron Wire
Soldering Iron
Fig. S-1-5
X5SNOTE