DIY Series 69: BlueLover K17 Multipurpose Voice Amplifier - Mic Input Malfunction

BlueLover (蓝色妖姬) K17 Multipurpose Voice Amplifier - Mic Input Malfunction

• This is an old model which had been discontinued for many years
• It is a multipurpose player with voice amplifier, portable speaker, MP3/WMA music player with USB/TF Card input, and radio.

Symptoms:

• Able to use radio and music player, no problem on the speaker (tested 4Ω)
• Unable to detect mic and use as voice amplifier

Photos:

1. BlueLover K17 Voice Amplifier, need to unscrew 4 screws located at the back housing (2pcs on top, 2pcs inside battery compartment)
2. Main Board with malfunction Mic Input (3.5mm Female Jack) removed
3. Main Board with malfunction Mic Input (3.5mm Female Jack) replaced with new replacement parts
4. BlueLover K17 Voice Amplifier fully functional with mic
5. Replacement Parts: 3.5mm Female Jack

Tools Required:

• Soldering iron (https://s.lazada.com.my/s.PIrp3)
• Desoldering pump
• Tweezer
• Screwdriver (https://s.lazada.com.my/s.PIrZM)
• Multimeter (https://s.lazada.com.my/s.PII5y)

Cost Involved:

• PCB Mount PJ-316 3.5mm Female Jack, US$0.15 (for 1 unit)