Panasonic PT-47WX33G, Service Manual

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holes in the board to mount standard transistors or diodes. Some chips capacitor or resistor board
solder pads may have holes through the board,however the hole diameter limits standard resistor
replacement to 1/8 watt. Standard capacitor may also be limited for the same reason. It is
recommended that identical components be used.
Chip resistor have a three digit numerical resistance code, 1st and 2nd significant digits and a
multiplier. Example: 162 = 1600 or 1.6k resistor, 0 = 0 (jumper).
Chip capacitors generally do not have the value indicated on the capacitor. The color of the
component indicates the general range of the capacitance.
Chip transistors are identified by a two letter code. The first letter indicates the type and the second
letter, the grade of transistor.
Chip diodes have a two letter identification code as per the code chart and are a dual diode pack with
either common anode or common cathode. Check the parts list for correct diode number.
Component removal
1. Use solder wick to remove solder from component end caps or
terminal.
2. Without pulling up, carefully twist the component with tweezers to
break the adhesive.
3. Do not reuse removed leadless or chip components since they are
subject to stress fracture during removal.
Chip component installation
1. Put a small amount of solder on the board soldering pads.
2. Hold the chip component against the soldering pads with tweezers or
with a miniature alligator clip and apply heat to the pad area with a 30
watt iron until solder flows. Do not apply heat for more than 3 seconds.
How to replace flat ic (required tools)
7