I have an audio device with two caps around an ic amp JRC2073. I replaced these two caps and the no audio fault remained, however by chance i shorted the exposed caps of these two with a finger each on one hand and got audio. My hand resistance was about 0.4mohn so i tried large resistor across instead and got audio too, why is this please? All the solder joints look and test good.

Hello everyone, I have a device which moves little motorised characters to music however i cannot get it to start up. I've attached the circuit diagram I've prepared to explain where i'm struggling. In the diagram you can see that the main power routes through a PNP driver transistor to derrive 5volts on the VCC. The base of the transistor is supplied from IC13 which is a sot23-5 marked "504"or "50B". What i'm falling to understand is how this device can reduce the voltage on the collector to that VCC voltage? As it happens i am unlikely to be able to source that IC I suspect...

Re: Rca RLED4010A power supply

thanks dick, who knows where the firmware may exist. unspun01 did this actually fix the problem? I seem to have all the required voltages from the mp118T to the inverter, the backlight flashes briefly. The inverter board is SLL320 0e1a and its driven by the SSL110. Any help from the forum greatly appreciated

Re: Rca RLED4010A power supply

the programming of the soic is beyond many people, is there a work around please?