LC-22DV200E - Sharp TV Service Manual (repair manual). Page 24

4. When bridge-soldering between terminals and/or the 

soldering amount are not enough, resolder using a Thin-

1. Take care of the polarity of new IC and then install the 

tip Soldering Iron. (Refer to Fig. 3-8.)

new IC fitting on the printed circuit pattern. Then solder 
each lead on the diagonal positions of IC temporarily. 
(Refer to Fig. 3-5.)

5. Finally, confirm the soldering status on four sides of the 

IC using a magnifying glass.
Confirm that no abnormality is found on the soldering 
position and installation position of the parts around the 
IC. If some abnormality is found, correct by resoldering.

When the IC leads are bent during soldering and/or

2. Supply the solder from the upper position of IC leads 

repairing, do not repair the bending of leads. If the

sliding to the lower position of the IC leads. 

bending of leads are repaired, the pattern may be

damaged. So, always be sure to replace the IC in this
case.

Soldering Iron

Solder temporarily

Solder temporarily

Fig. 3-5

IC

Thin-tip Soldering Iron

Fig. 3-8

3. Absorb the solder left on the lead using the Braided

Shield Wire.  (Refer to Fig. 3-7.)

Do not absorb the solder to excess.

IC

Soldering Iron

Supply soldering 
from upper position 
to lower position

Solder

Fig. 3-6

Soldering Iron

IC

Braided Shield Wire

Fig. 3-7