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(6).How to replace the LEDs

①

How to measure 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

of other LEDs.

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.

Note:

This measurement method is only applicable

to LEDs of this product model.

②

How to replace LEDs?

Heat the LEDs with the air

pressure gun (200℃)

Heat the LEDs with the air pressure gun. Note

that the temperature of it is set to 200℃.

Aim the air pressure gun at the bad LEDs and

heat until the tin surface of the pad melts.

Remove the bad LEDs with tweezers and set

aside.

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

Warning：

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.

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.

Remove bad LEDs with air

pressure gun

Align the LEDs to the

direction and the pad

Clamp the LEDs with tweezers and make every

lamp base accurately corresponds and appress

to the pad.

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.

Unfilled corner

Positive

Heat until the LEDs pad is

melted and ﬁxed