Thursday, July 14, 2016

CM4320 LG Mini Hi-Fi system – SMPS circuit diagram

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

LGLP42SLPV2EV3 – LG 42 inch LCD TV SMPS - EAY34797001 Schematic

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EAY34797001 - LG 42" LCD TV power supply circuit diagram

LG32LN530B LED LCD TV Power supply board – EAX64905001 – Circuit Diagram

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LG 32 inch LED LCD TV 32LN530B SMPS Schematic.  Used ICs:  SC1S311A [Power control] – MDF11N65B [Switching Output FET] – MAP3202 – NR891D...
Monday, July 11, 2016

Aiwa HT DV50 HTS – DVD system – Power Amplifier and SMPS circuit diagram - STR-F6676 – TA2020-020

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Used ICs: STR-F6676 – TA2020-020. Optical pickup – SF-HD3AV / HD3AVC Circuit diagram (Schematic) PWB Optical pick-up
Friday, July 8, 2016

Philips QFU2.1E Chassis LCD TV - SMPS circuits - troubleshooting

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Power Supply Unit For 32", 37", and 55" sets, power supply units should be repaired on component level.  All other power su...
Wednesday, July 6, 2016

Stereo Amplifier Circuit Diagram using Power Transistors

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Power transistors with LM391 or at the entrance, preamp
Sunday, July 3, 2016

Philips FR 680A Stereo Radiogram – Circuit Diagram

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Tubes used: EL84 – ECC83 – ECH81 - EAA91 – EF184 – EF93 – EM80 Circuit Diagram

Philips BR 405A - AC-DC Radio - Circuit Diagram

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Vacuum tubes used: ECH42 – EAF42 – EBC41 – EL42 – EM34 – AZ41 My age was 1-year; when this set was released by Philips in 1951.  Now I...