Friday, August 11, 2017

Assemble a HiQ guitar amplifier - circuit diagram – using 6L6 and 12AX7 vacuum tubes

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RCA’s first version of this tube was an early octal base tube. Like most with this base it had a metal, rather than glass, envelope. Late...
Wednesday, August 9, 2017

Philips MCM275 Micro system - schematic

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Philips MCM275 DVD micro system circuit diagram Schematics - [Click on the schematics to magnify]
Tuesday, August 8, 2017

Britania micro system BS370 schematic

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Used ICs: V5888, M5671-ALAA(SDRAM), MOD102, TA8227P, ET2313, CE5B Click on the schematics to magnify
Monday, August 7, 2017

Samsung CS29A5HT8X/BWT - E2PROM (IC902) Replacement, service mode, memory data, white balance adjustment

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Samsung CS29A5HT8X, CS29A5HT8X/NWT, CS29A5HT8X/VWT, CZ21A8VW8X/ELS When IC902 is replaced, all adjustment data revert to the initial valu...

Philips HTS3538 – SMPS and Power amplifier circuit diagram, software update, service mode

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Philips Home Theater DVD Player HTS3538/12/51/55/05/98 Amplifier  Total output power: 600W RMS (30% THD)  Frequency response: 20 Hz-20...
Friday, July 7, 2017

Samsung CS21M16MJZXNWT CRT TV – how to enter the service mode, circuit diagram

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High Voltage Limits High voltage must be measured each time servicing is done on the B+, horizontal deflection or high voltage circuits. C...
Wednesday, June 28, 2017

Akira 14THS3/CE CTV UOC OM8370 or TDA9381- Service mode - schematic – fault finding

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How to enter service mode – Akira 14THS3 , 14 inch color TV, Troubleshooting, circuit diagram, working principle The high voltage in the ...
Tuesday, June 27, 2017

Philips 40PFG5100-77 LED LCD TV –SMPS circuit diagram, Pin voltages - Chassis TPM15.4L

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Philips 32PFG5100, Philips 40PFG5100 and Philips 48PFG5100 - SMPS and Back-light inverter schematic  -  Power Supply Unit A715G6934 Schem...