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

DSP/ SPBANA/ HEADPHONE CIRCUIT DIAGRAM

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 Amplifier Circuit diagram

VFD/ KEY/ LED CIRCUIT DIAGRAM 

Syscon

SMPS

Voltage chart

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

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)

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

Sony KLV-37M400A – LED LCD TV SMPS schematic

Used ICs: L6562DTR, DAS01A, DLA001DTR

PCB Top and foil side

Philco PH29E52DG 29 Inch LED LCD TV – SMPS, Backlight, power and LVDS circuit diagram

Used ICs: TEA1733, MT29F1G08ABA, BH3544, AMP5707, MP1495, MP1470, SY8066, 4953, AP9435

Headphone amplifier and Mute circuit

NAND Flash

Audio amplifier circuit

Power

LVDS

SMPS

Back-light inverter

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Rotel RSX 1056, Rotel RSX 1057 Power and amplifier circuit diagram

Rotel SURROUND SOUND RECEIVER RSX-1057
Continuous Amplifier Power (five channels driven)
75 watts/ch (20-20k Hz, <0.05% THD, 8 ohms)
Continuous Amplifier Power (two channels driven)
100 watts/ch (1kHz, <1.0% THD, 8 ohms, DIN)
Power Requirements (AC)
120 volts, 60Hz (USA version)
230 volts, 50Hz (CE version)
Rotel SURROUND SOUND RECEIVER  RSX-1056
Continuous Amplifier Power (five channels driven)
75 watts/ch (20-20k Hz, <0.05% THD, 8 ohms)
Continuous Amplifier Power (two channels driven)
100 watts/ch (1kHz, <1.0% THD, 8 ohms, DIN)
Power Requirements (AC)
115 volts, 60Hz (USA version)
230 volts, 50Hz (CE version)

RSX1056 power schematic

RSX1056 Power amplifier schematic and PWB

RSX1057 Power schematic

RSX1057 Power amplifer schematic and PWB