Thursday, September 15, 2016
Power Board Schematic - 715G5246P02W21002S - For BenQ 42RL7500 LED LCD TV
Professional technician for all kind of electronic equipment. Doing since 1974.
Sony KDL-40/46/T3500/40V2900 – SMPS schematic
Professional technician for all kind of electronic equipment. Doing since 1974.
Wednesday, September 14, 2016
Sony Bravia 40EX400 – SMPS schematic
Professional technician for all kind of electronic equipment. Doing since 1974.
Monday, September 12, 2016
Color TV circuit diagram – CRT type – Using ICs TDA9850 VIF – PT11400 – TDA9570H Syscon Chroma Jungle – BR24C08-F Syscon Memory
CRT type color TV Circuit diagram - Used ICs: TDA9850 VIF – PT11400 – TDA9570H Syscon Chroma Jungle – BR24C08-F Syscon Memory - UC3842B SMPS control – 2SK2545 SMPS switching output FET - TDA1013B Audio output – HEF4052 Input selector – TDA9309 Vertical scan output – BU506DX Horizontal scan output – 1355218599 Fly-back Transformer – 1353002400 Line Drive Transformer – PT11400 Remote control IC – 5V SCL-SDA type tuner
TDA 9570 H/N3/AI/1627
Circuit Diagram [Schematic -Full] (Click on the schematic to zoom in)
Professional technician for all kind of electronic equipment. Doing since 1974.
Saturday, September 10, 2016
Toshiba 48L2400 – DL4845i – SMPS and audio amplifier circuit diagram – LED LCD TV
Professional technician for all kind of electronic equipment. Doing since 1974.
Friday, September 2, 2016
Sharp LC-15SH1U - Sharp LC-15AV1U – SMPS – Back-light inverter and LCD main circuit diagram
Fixed voltage ( or Auto voltage selectable ) power supply circuit is used in this unit. If Main Fuse (F601) is blown, check to see that all components in the power supply circuit are not defective before you connect the AC plug to the AC power supply. Otherwise it may cause some components in the power supply circuit to fail.
BECAUSE A HOT CHASSIS GROUND IS PRESENT IN THE POWER SUPPLY CIRCUIT, AN ISOLATION TRANSFORMER MUST BE USED. ALSO, IN ORDER TO HAVE THE ABILITY TO INCREASE THE INPUT SLOWLY, WHEN TROUBLESHOOTING THIS TYPE POWER SUPPLY CIRCUIT, A VARIABLE ISOLATION TRANSFORMER IS REQUIRED.
BECAUSE A HOT CHASSIS GROUND IS PRESENT IN THE POWER SUPPLY CIRCUIT, AN ISOLATION TRANSFORMER MUST BE USED. ALSO, IN ORDER TO HAVE THE ABILITY TO INCREASE THE INPUT SLOWLY, WHEN TROUBLESHOOTING THIS TYPE POWER SUPPLY CIRCUIT, A VARIABLE ISOLATION TRANSFORMER IS REQUIRED.
SMPS schematic
Back-light inverter
Professional technician for all kind of electronic equipment. Doing since 1974.
Friday, August 26, 2016
JVC AV21TMG4 – JVC AV2104T – CRT TV – Circuit diagram – voltage chart
Do not touch the LIVE side GND or the LIVE side GND and the ISOLATED (NEUTRAL) side GND simultaneously. If the above caution is not respected, an electric shock may be caused. Therefore, make sure that the power cord is surely removed from the receptacle when, for example, the chassis is pulled out.
Do not short between the LIVE side GND and ISOLATED(NEUTRAL) side GND or never measure with a measuring apparatus measure with a measuring apparatus ( oscilloscope, etc.) the LIVE side GND and ISOLATED (NEUTRAL) side GND at the same time. If the above precaution is not respected, a fuse or any parts will be broken.
Click on the pictures to magnify
PWB
Voltage chart
Professional technician for all kind of electronic equipment. Doing since 1974.
Thursday, August 25, 2016
Staner BS 150 Bass Amplifier - circuit diagram
Professional technician for all kind of electronic equipment. Doing since 1974.
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