(6)
.
How to replace the LEDs
How to measure LEDs?
Aim the air pressure gun at the bad LEDs and
heat until the tin surface of the pad melts.
Heat the LEDs with the air pressure gun. Note
that the temperature of it is set to 200
℃
.
Take out the LEDs of the same model as the
product, measure and confirm the positive and
negative poles of it according to the above
Remove the bad LEDs with tweezers and set
aside.
Set the digimer to diode test, the red stylus
touches any pin on the side of the LEDs and the
black stylus touches the pin on the other side of
the LEDs. If the LEDs is lit, the end of the red
stylus contact is positive, the end of the black
stylus contact is negative.If the LEDs is not bright,
switch the red and black stylus and measure
again. If it is still not bright, means that the LEDs
is broken.
of other LEDs.
Observe the LEDs front four corners which have
a very small unfilled corner, a lamp base of its
bottom is the positive of LEDs and the remaining
three anti-clockwise lamp bases are respectively
the negative pole of red, green,and blue lamp.
The most direct method is to observe the silk
screen printing of "+, R, G, B" on LED light board
or the unfilled corner direction
How to replace LEDs?
①
②
Heat the LEDs pad with air pressure gun and
place the LEDs in the corresponding position on
the pad. Heat until tin surface of pad melts and
fixed with air gun.(LEDs
cannot float high and
tilt)
It can working properly after module is bright and
display effect is normal.
Clamp the LEDs with tweezers and make every
lamp base accurately corresponds and appress
to the pad.
Heat the LEDs with the air
pressure gun (200
℃
)
Remove bad LEDs with air
pressure gun
Align the LEDs to the
direction and the pad
Heat until the LEDs pad is
melted and fixed
Unfilled corner
Positive
↓
↓
?
/ /
12
The temperature of the soldering iron should be 350
℃
when replace IC and LEDs. The
welding should be quick and the welding time should not be too long. Otherwise, IC and
LEDs may be damaged due to overheating.
Be careful when operating the product to avoid being scalded by the soldering iron. Turn
off the soldering iron power in time when not in use. keep it away from combustible and let
it cool down naturally.
Non-professional and technical personnel please do not try to repair the LED module
without authorization. Send the module back to our company for maintenance.
Do not use sharp tools when removing the lamp board of waterproof module, otherwise
the circuit board line will be damaged.
This measurement method is only applicable
to LEDs of this product model.
Note:
Warning
：
