China made Wireless Speakers - 4

I opened or destroyed  my LED Music Bulb to check the inside. Even after destroying it still works well, making colorful light and sound. The inside is compact, Power supply board, Control board and LED board and speaker. As this is operated by Remote Control no switches are found, which make these compact in addition to using several ICs.

Since the power is AC main like a common bulb it needs to change it to DC.  I know a power supply being important but I skip it this time. Just it uses the following parts:

Switching Power Supply board

1) one Diode Bridge MB8S (On Semi ?)
2) one AC-DC Converter (SPT) SP5626P (Westech Power, China)
3) one Photocoupler CT 357C (CT Micro, China)
4) one relatively big yellow one is a switching transformer with no name
5) one 10uF 400V DC Electrolytic Capacitor (E Cap) (ChengX brand)
6) two 100uF 50V E Caps (ChengX brand)
7) one 22uF 50V E Cap (ChengX brand)
8) one Choke Coil
9) one Diode SF M1C
10) one Film Capacitor 2J102
11) one Metal Oxide Film Resistor
12) two MLCCs
13) several Chip Resistors

Control board 

1) IC  C7THN48129 (1710NRZ-11D) 28-pin Blue tooth and audio, etc function (Brand name (*))
2) FT25H04S (Fremont Micro Devices, China) 4M-bit/2M-bit Serial Flash for program stored
3) 26.000MHz Oscillator
4) ANT8108 SOP8 Audio Amp for the 3W speaker (ShenZhen ChipSourceTek)
5) HXN e2719E (DC-DC Converter) for LED power supply ?
6 ) one SOT89 Transistor D882 (probably SHIKE,China)
7) one 1000uF/10V, one 470uF/10V, one 22uF/50V E Caps (all ChengX brand)
8) one Peaking Coil
9) three SMT (SOT-23) Transistors (S8050 - mark on chip J3Y)
10) many chip resistors and MLCC

(*) The band name is unknown, not identified but I can find this logo on the internet advertisement with similar part numbers.

(After re-checking this logo seems to belong to the company called "AppoTech" and they have some more different rather many Bluetooth + Audio ICs)


sptt