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Showing posts with the label SMPS

Panasonic TC L32X5B LCD TV TNPA 5596 – SMPS circuit diagram

Circuit diagram and PWB Click on the pictures to zoom in

Sony KLV 37M400A – LED LCD TV SMPS schematic

Used ICs: L6562DTR, DAS01A, DLA001DTR PCB Top and foil side

Haier LE32C13200 Haier LE40C13800 SMPS and Inverter Circuit Diagram

Power supply Regulator  and Back-light Inverter Schematic - Haier LE40C13200 and Haier LE32C13200 - LED LCD TV CLICK ON THE SCHEMATICS TO ZOOM IN

CM4320 LG Mini Hi Fi system – SMPS circuit diagram

Power supply regulator schematic – LGCM4320 Mini Hi-Fi Circuit Diagram - SMPS Click on the schematic to magnify

Learning SMPS the hard way

SMPS is the toughest section in Power Electronics. Tremendous knowledge is required for choosing active and passive parts for use in SMPS circuits. Special parts are often required specifically for use in SMPS. Many components that can be used for low frequency applications in Power Electronics may fail if used in SMPS circuits. When I started learning Power electronics in 2008, I placed emphasis on SMPS. Regarding SMPS, nothing was available here. I had to collect and gain everything piecemeal- knowledge, literature, active and passive parts, testing equipment etc. The main drawback was the lack of knowledge in this field. In my country, SMPS is not taught in detail in any engineering university. So, teachers are not readily available. Additionally, relevant books were also not available. So, my father chalked out a deliberate and detailed plan for me to learn SMPS: Detailed Plan for learning SMPS at home Step 1   – Collecting knowledge by collecting required books from abroa...

STR X6556 based SMPS power supply circuit diagram – LG29CC2RL

SMPS and Horizontal scan output schematic – LG29CC2RL 29 inch CRT TV Circuit diagram [ Click on the schematic to magnify ]

Philips QFU2 1E Chassis LCD TV SMPS circuits troubleshooting

Power Supply Unit For 32", 37", and 55" sets, power supply units should be repaired on component level.  All other power supplies are a black box for Service. When any of these power supplies is defective, a new board must be ordered and the defective one must be returned, unless the main fuse of the board is broken. Always replace a defective fuse with one with the correct specifications. This part is available in the regular market. Replace safety components, indicated by the symbol , only by components identical to the original ones. Any other component substitution (other than original type) may increase risk of fire or electrical shock hazard. PLDC-P109B (32" sets) and PLDD-P109A (37" sets) The output voltages to the chassis are: * V STB (+3.3 V; stand-by mode) * V SSB (+12.3 V; on-mode) * V SND (+12.3 V; audio circuit). Test instructions 32" & 37" * check fuse (F101) * standby check VSTB (C306), measure 3.3 V * PFC voltage check (C644), mea...

Sony KDL 40 46 T3500 40V2900 – SMPS schematic

Power supply regulator board CIRCUIT DIAGRAM - Sony KDL40, KDL46, KDL40V2900 LCD TV Click on the schematics to magnify

Sony KDL 42V4100 LCD TV – SMPS – DPS250AP 34 – Schematic

Circuit diagram and PWB Click on the pictures to zoom in