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I've been using my YCCC SO2R+ 4-radio box for several years now, and I'm very pleased with it.
Just lately, however, it seems that, each time I switch it on, it has 'forgotten' its settings and corrupted the firmware.
This manifests itself in the SO2R Box program by showing Radio 1, Radio 1, Radio 3, Radio4 in the middle of the window, instead of Radio 1, Radio 2, Radio 3, Radio 4. If I change it so the 2nd box reads Radio 2, it is quite happy to switch between radios on OTRSP command. However, the second manifestation of the problem remains, namely that the RX audio does not switch correctly - I can hear radio 1 and radio 2 in the left ear, even though I have asked it to switch to only radio 2.
I re-load the firmware, using the SO2RBox Utility and all is well.
Next time I switch it on, things have reverted to the errors described above.
Is there some kind of backup that has failed? I can see no sign of a battery or a large capacitor in the schematic, so I guess it is in the PIC. Could that lose its ability to retain its setting?
Any advice would be gratefully received.

Thanks,

John
G4DRS

The settings are stored in EEPROM in the microprocessor.? If you reset the EEPROM using the SO2R Box utility and it does not keep the new values across a power cycle then I think the microprocessor has developed a problem and should be replaced.

I believe Dennis, W1UE has some replacement microprocessors.? If not I think I do, or I can program a new one.

??? Paul, K1XM

On Mon, Aug 7, 2023 at 2:13?PM John, G4DRS via <g4drs=[email protected]> wrote:

I've been using my YCCC SO2R+ 4-radio box for several years now, and I'm very pleased with it.
Just lately, however, it seems that, each time I switch it on, it has 'forgotten' its settings and corrupted the firmware.
This manifests itself in the SO2R Box program by showing Radio 1, Radio 1, Radio 3, Radio4 in the middle of the window, instead of Radio 1, Radio 2, Radio 3, Radio 4. If I change it so the 2nd box reads Radio 2, it is quite happy to switch between radios on OTRSP command. However, the second manifestation of the problem remains, namely that the RX audio does not switch correctly - I can hear radio 1 and radio 2 in the left ear, even though I have asked it to switch to only radio 2.
I re-load the firmware, using the SO2RBox Utility and all is well.
Next time I switch it on, things have reverted to the errors described above.
Is there some kind of backup that has failed? I can see no sign of a battery or a large capacitor in the schematic, so I guess it is in the PIC. Could that lose its ability to retain its setting?
Any advice would be gratefully received.

Thanks,

John
G4DRS

On Tue, Aug 8, 2023 at 01:41 PM, Dennis W1UE wrote:

Yes, I have replacement PICs available.? PIC itself is $5, but postage to get it to England is $19!

?

Dennis W1UE

?

?

?

$19 shipping!

Do I need to buy the device pre-programmed, or could I source one over here and program it myself?

Cheers,


John
G4DRS