Post by nodols on Jan 11, 2023 11:00:07 GMT -5
Bought an Arcam400 FMJ with no sound and no VFD display. I"ve plugged in to TV through HDMI out and it has display.
I've checked the VFD and it it toast. Leak. I don't know where to source if so anybody has suggestions please let me know.
However, the main issue really is the No Sound to speakers.
I have connected a signal generator to the RCA CD input, and signal stops at IC101 Renesas R2A15218FP IC. -7V and +7V power supply in there. On this IC101 IC, mute is in pin 51, Clock on pin 50, data on pin 49.
Pin 51 - mute is logic low (no voltage) so I'm guessing this is not a muting issue.
Pin 50 clock and pin 49 data - however is a different story. I don't get any signal on them. I tried scoping on a older analog scope, and no signal whatsoever. No voltage as well from the DMM.
Anybody has any idea if it's the IC itself or should I look somewhere else?
This is crossposted. Hoping to get more expert's opinion.
Thank you.
I've checked the VFD and it it toast. Leak. I don't know where to source if so anybody has suggestions please let me know.
However, the main issue really is the No Sound to speakers.
I have connected a signal generator to the RCA CD input, and signal stops at IC101 Renesas R2A15218FP IC. -7V and +7V power supply in there. On this IC101 IC, mute is in pin 51, Clock on pin 50, data on pin 49.
Pin 51 - mute is logic low (no voltage) so I'm guessing this is not a muting issue.
Pin 50 clock and pin 49 data - however is a different story. I don't get any signal on them. I tried scoping on a older analog scope, and no signal whatsoever. No voltage as well from the DMM.
Anybody has any idea if it's the IC itself or should I look somewhere else?
This is crossposted. Hoping to get more expert's opinion.
Thank you.
