OT: Yamaha 03D help

Ben wrote on 1/28/2004, 4:21 PM

This is completely off-topic, but I know there are some very knowedgable people here, and hopefully someone may be able to help me...

I've just bought a second-hand 03D, ostensibly in very good condition (with hindsight foolish, I know). On powering it up, the screen illuminates but nothing else happens - no Yamaha boot screen and no LEDs light up. I'm guessing something inside is seriously wrong, and am going to be calling Yamaha support as soon as I can.

I was just wondering if anyone here has an idea what could be wrong? Could it be something simple, or is it going to cost me a fortune to get it repaired, if it's repairable at all?

Any advice would be really appreciated.

Thanks
Ben

Comments

Rednroll wrote on 1/28/2004, 5:59 PM

I have an 03D and it certainly does not do that. Is that how it worked when you purchased it? You may have gotten screwed depending on the price you paid for it. Did an owners manual happen to come with it? There is a power on sequence within the 03D that will restore it back to the factory settings and it will reinitialize everything. You might want to give that a try to see if that fixes the problem. You can also download the the manual from Yamaha's website. I don't have my manual sitting next to me, but if you have any trouble finding the information on the initialization sequence, just post back and I'll look it up in my manual.

Ben wrote on 1/29/2004, 5:04 AM

Hi Red

Thanks for your response.

I've used an 03D at my workplace for a good couple of years and yeah, I know, it's definitely not supposed to do that! It is how it worked when I purchased it - only just received it in the mail. It seems like it may have been damaged in transit - I'm assured that it was definitely fully working when sent out (obviously the guy would say that). Unfortunately the item was on Ebay, but we circumvented Ebay... long story. As I said, in hindsight, very stupid of me. I paid 650 UK pounds for it.

I do have the manual, and have tried resetting by holding down store and switching on, and by holding down enter and switching on - one of those initializes settings, the other recalibrates the fades, can't remember which is which right now. Suffice to say, the desk doesn't respond to any of these operations.

Is there anything else you think I could try?

Thanks
Ben

CDM wrote on 1/29/2004, 6:37 AM

My 03D did the same thing after about 4 years. The screen would flicker and sometimes go completely blank. Not blank, just lit-up but not showing anything. If that's what's happening to you, it could just be the screen, which cost me $325 to fix in NYC. It could be something else, though. Are you able to get signal?

Ben wrote on 1/30/2004, 7:15 AM

Hi Charles

I don't think it's that - the desk is completely dead with nothing lighting up. Not able to get any signal.

I've spoken to Yamaha now and apparently it's possible it could be an internal fuse - I'm told there are a few of these. The engineer on the phone seemed to think this is something I could look at, but I'm not sure how comfortable I'd be doing that - I'm no electronics engineer! I guess it looks like I'm either going to be now sending it to Yamaha or back to the guy I bought it from...

Cheers
Ben

Rednroll wrote on 1/30/2004, 8:24 AM

Or you can sell it to me for a dirt cheap price :-). I could use another 03D, to connect it to my other one in paralel. I am an electronics engineer. I can tell you from your description with 95% confidence, the problem with it is in the power supply internal. The Yamaha guy is correct, because those fuses are located on the power supply PCB. The power supply should be pretty easy to find. Open up the mixer, look at where the power cord comes into the case. Usually the first PCB you'll see connecting the wires from the AC outlet is the power supply board. It will be the one with large capacitors on it, and probably a couple of metal heat sinks. You'll see a few wires coming off of this PCB, which then feeds power to all the rest of the PCB's in the mixer. You can unplug these wires and easily remove the entire power supply. On that Power supply board there will probably be a few fuses that clip right onto the PCB. Check all those, and replace them. If those are all good, then you probably have something wrong with the actual power supply. You might be able to contact Yamaha and have them ship you an entire new power supply section. This is what they will do anyways when you ship it off to them, or just replace the fuses if it's those. The only difference is that you'll probably save $200-$300 UK pounds.