Meridian Unplugged - Powered by MrTechGuy.co.uk Forums Discussion Meridian - Systems G68 issue

I may be wrong but I vaguely remember my 568.2mm refusing to calibrate in that configuration with a pair of DSP7200s

Does anyone have a circuit diagram for the G68J

I have tried a config with an analogue set up and got no sound either.

I guess I could be doing something really stupid in the config as I'm not that familiar.

Is it likely that both the analogue and digital out boards have failed or is a problem with the EF, CD or FICL cards? What do they do?

What does the LM317T on the motherboard supply?

It is entirely possible that a power supply failure could destroy the analogue outs - mine did - but I can't speak for digital outs.

I was not having consistent results in updating the firmware, so removed the cards cleaned the connectors and reassembled. Firmware updates every time now using the mfp file (ie in one go).

However still no sound.

Don't suppose anyone has any FICL, CD, EF, GOEA cards lying about or a scrap G68?

I've also emailed Meridian and Chris Coaster as a last act of desperation.

I'm approaching the point where I will have to return to the owner as is...

Tarik,

Have you checked the voltage levels and also the noise/hum on those lines?
Measure for each voltage and the current flow ... then for each single card were necessary, so you know much more.

Good luck-Robert

For Outputs

Sounds like either the :

DSP C/D card

FIFO Card

and/or the output card(s) are toast.

Any one or combination of the above.

For Sluggish response with signal applied:

Could be the Digital input card and or the Computer card (both would be in the CLPD device)

Applying the voltages incorrectly to the unit did not do it any good.

That most likely will be an expensive fix.

Thanks Marc. I'll give up and return the unit to the owner along with the bad news.