I was very surprised, "winning" such a cause: The device is working properly for some time a certain interval was not , suddenly spontaneously goes into video mode, ceases to operate a local keyboard, sometimes she comes "line" of sound, sometimes just disappear and the screen and sound. Replacing the CPU did not change anything, install a working memory - too. Only disconnecting the output of a sensor information given result. The receiver has been successfully replaced. I had never seen anything like this chassis!
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STR Posted by Gopakumar Gopalan at Thursday, October 03, Gopakumar Gopalan. Newer Post Older Post Home. Base drive. Not connected. Positive bias. Negative bias. Error amp input. Regulator drive.
Error amplifier. Input supply. Regulated voltage out. Error amp. Onput [Ref. Supply voltage. Switched regulated supply voltage out. Charging capacitor. Start bias input. Switching regulator. Over current protect feedback.
Drain of switching transistor inside STR. Voltage input. Unregulated voltage input. Feedback [output to input]. Error amplifier input. Switching signal output. Regulated power output. On-condition voltage. Standby condition voltage. Error voltage output. Base drive input. Collector of switching transistor. Collector of error transistor. Collector of switching transistor inside Ic.
Common [emitter of switching transistor]. Base of switching transistor inside Ic. Drive [voltage control]. Current detector. Drive [base error amp:].
Pulse modulation coupler. Collector of switching transistor inside the STR. Base of switching transistor inside the STR. Over current protector [OCP]. Voltage input [supply]. Starting voltage. Unregulated DC input. Regulated output. Regulator switch. Reference voltage. Unregulated DC. Control voltage. On condition voltage. Vout sense -. Pin No. Drive out. Drive Cot. Positive supply. Drive control. Soft starter.
Supply input. Reg Control. Reg control.
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SMR40000, SMR40000C, SMR40100