Question about Sansui VRDVD4005 DVD Player/VCR
Standby light is on all the time but unit will not do anything at all. will not respond to remote and red light will not extinguish unless unit is unplugged???
This sounds like a major power supply fail. Fortunately most of the voltages are present on the power supply when the unit is in standby. The ones that are controlled by the STANDBY/ON button are 12V and 5V which can be measured on connector CN3. The STANDBY/ON control line to the power supply board is labeled P/L on connector CN2. In the standby mode the 5V line should be 0V, the 12V line should be 0V and the P/L line should also be 0V. In the on mode the P/L line rises to 3.1V, the 5V line goes to 5V, the 12V line goes to 12V. All the other voltages should be approximately as listed on the board whether in STANDBY or ON. (+FL= -19V and -FL= -22V). The probable fault is the capacitor C4 which filters the 5V line and it can be found near the rectifier diode D2. and the transformer.
Posted on Jan 16, 2008
Turn the power on. to get rid of the red light you need to press the timer/rec button on the remote until it turns off. the red light means it is programed to record.
Posted on Jan 10, 2008
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Posted on Jan 02, 2017
I have been struggling with the same problem and almost rebuilt the power supply before finding the solution. In my case it was a faulty capacitor-C4, next to the diode D4. Replacing C4 and the machine performed as new. I hope this helps. Cheers
Posted on Jan 10, 2008
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