How to replace the amplifier board of FP series?

8

year

GUANGZHOU XINBAOSHENG AUDIO EQUIPMENT COMPANY LIMITED

Search This Supplers Products:Power amplifierfp10000q amplifierfp20000q amplifierwireless microphoneaudio processoraudio mixer

home categories store home faqsFAQ about Power Amplifier

As an important part of the power amplifier, the power amplifier board may be damaged for various reasons and need to be replaced. The following are some reasons that may cause damage to the power amplifier board:

Device aging or damage: After long-term use, the high-power tubes, field-effect tubes, power filter capacitors and thermistors on the power amplifier board may cause electrolyte overflow, burst or breakdown due to aging, causing damage to the power amplifier board.

Power supply problem: Unbalanced load of each phase of the power supply line or problems with the power supply line itself may cause the power amplifier to overheat or overload, thereby damaging the power amplifier board.

Input signal problem: The input signal is too large or there are distortion problems, such as noise interference, signal attenuation, etc., which will cause the power amplifier to be unable to receive normal audio signals, resulting in output distortion or distortion.

Feedback circuit problem: The feedback circuit is an important part of the power amplifier. If there is a problem with the feedback circuit, such as component damage, poor line connection, etc., the power amplifier will not work properly, resulting in output distortion or distortion.

Overheating or overload: When the power amplifier is overheated or overloaded, the possible reasons include power supply problems, improper heat dissipation design or excessive input signals.

Frequency drift or instability: When the power amplifier has frequency drift or instability, possible reasons include component aging, capacitor or inductor failure, feedback network problems, etc.

Electromagnetic interference: The 220V AC power supply is not clean or the amplifier itself has poor filtering, which may cause noise problems, thus affecting the normal operation of the amplifier board.

Poor contact: The signal line has poor contact, especially the microphone line, which is prone to poor internal contact due to frequent shaking, causing noise and AC noise.

Sinbosen FP series is one of the hot-selling product series, sold to many countries and customers. If the Sinbosen FP series amplifier you purchased is damaged due to other operations and needs an amplifier board, the following is the operation engineering of replacing the amplifier board of the FP series amplifier:

Firstly, Take out all of screws on the amplifier board.

Secondly, Put the insulation material under the board to avoid short circuit.

Distinguish each channel board. A B C D channel

Take out the insulation paper

There is two more screws on the B and D amplifier board

Thirdly, Take out 4pcs cables and one pcs white cable

Now our engineer demo for the D channel board replacement

Look, Take out 4pcs cables and one pcs white cable

Put some tins on four pcs points.

Connect with cables by soldering machine.

Screw in two pcs screws

Important! Put the insulation paper back!

Connect with the White cable.

Screw in other screws