|
|
|
Categories
|
|
Information
|
|
Featured Product
|
|
|
 |
|
|
There are currently no product reviews.
 ;
Good condition and quality. Hard to find anywhere in Internet, only on this site.
 ;
Exactly what I needed to be able to bring the amp back to life... will come back to this site the next time I need schematics.
;
Information was accurate and very helpful.
However the continuity made it a little difficult to follow from one page to the next.
;
Very very good as usual very trustable site. Perfect!!!!!!
;
The Service Manual received was helpful. Good copy of original document.. I recomend all of my friends about this technical page.
AV-21L81B AV-25L81B
REPLACEMENT OF CHIP COMPONENT
a CAUTIONS
1. 2. 3. 4. Avoid heating for more than 3 seconds. Do not rub the electrodes and the resist parts of the pattern. When removing a chip part, melt the solder adequately. Do not reuse a chip part after removing it.
a SOLDERING IRON
1. Use a high insulation soldering iron with a thin pointed end of it. 2. A 30w soldering iron is recommended for easily removing parts.
a REPLACEMENT STEPS
1. How to remove Chip parts
Resistors, capacitors, etc. (1) As shown in the figure, push the part with tweezers and alternately melt the solder at each end.
2. How to install Chip parts
Resistors, capacitors, etc. (1) Apply solder to the pattern as indicated in the figure.
(2) Grasp the chip part with tweezers and place it on the solder. Then heat and melt the solder at both ends of the chip part. (2) Shift with tweezers and remove the chip part.
Transistors, diodes, variable resistors, etc. (1) Apply extra solder to each lead.
Transistors, diodes, variable resistors, etc. (1) Apply solder to the pattern as indicated in the figure. (2) Grasp the chip part with tweezers and place it on the solder. (3) First solder lead A as indicated in the figure.
SOLDER
SOLDER
A B
(2) As shown in the figure, push the part with tweezers and alternately melt the solder at each lead. Shift and remove the chip part.
C
(4) Then solder leads B and C.
A B C
Note : After removing the part, remove remaining solder from the pattern.
No. 51903
13
|
|
|
> |
|
