Thứ Ba, 24 tháng 1, 2017

Thứ Sáu, 20 tháng 1, 2017

LG DM5620K (DM5620K, DMS5620V/W) KARAOKE DVD Mini Hi-Fi System SMPS circuit diagram

DSP/ SPBANA/ HEADPHONE CIRCUIT DIAGRAM
Click on the pictures to zoom in
 Amplifier Circuit diagram
VFD/ KEY/ LED CIRCUIT DIAGRAM 
Syscon
SMPS
Voltage chart

Thứ Ba, 17 tháng 1, 2017

Panasonic TX29E50D 29inch CRT TV – How to enter the service mode, circuit diagram

Used ICs: MSP3410G, 24C16, SDA55xx, VSP9402, DDP3315C, TDA4470M, STR-F6654, TDA8358J, TDA6108JF - Panasonic TX-29E50D, TX-29E50D/B, TX-29PS12D, TX-29PS12F, TX-29PS12P 
ALIGNMENT SETTINGS
(The figures below are nominal and used for representative purposes only.)
To access Service Mode select program position 99 and set sharpness to minimum.
Press “MUTE” button on remote control and at the same time press the „
” button on the customer controls at the
front of the TV, this will place the TV set into Service Mode.
Press
/ buttons to step up / down through the functions.
Press + / - buttons to alter the function values.
To exit Service Mode press „MENU” button.
TX-29E50D, TX-29E50D/B, TX-29PS12D, TX-29PS12F, TX-29PS12P - MAIN-BOARD PTMPMSV29P1FF circuit diagram

Thứ Ba, 10 tháng 1, 2017

Philips 21PT1663 CRTTV circuit diagram (Schematic)

Philips CRT televison 21PT1663 - Pal - SECAM - NTSC Schematic
Control circuit
CRT base card
Line drive & Output
Multi mono sound amplifier
Sound processing
NICAM decoder
Video processing
SMPS (Power supply)

Thứ Hai, 2 tháng 1, 2017

Phonic performer A540 Active Speaker circuit diagram

Phonic A540 performer wireless  15 inch 400Watts active speaker schematic
Used ICs: NJM4580, TDA7293, IRF840(FET-SMPS)
SMPS [Click on the schematics to magnify]
Amplifier
HF amplifier
Contour (Tone control)
Speaker
Input
Wireless