The Yamaha AN1x Synthesizer mailing list

I did check everything obvious. I've tried the unit without anything 
hooked up to it, no difference. I'll try running it sans-synth card 
and see if that has an effect. I've got an e-mail into yamaha 
service, I'll see if they can send me a svc manual. Though I hate the 
idea of troubleshooting and replacing tiny surface-mount 
components... I just bought this thing, and the PO refuses to return 
my emails.

I thought I'd be better off buying locally, but I guess it's best to 
stick to ebay where you at least have feedback to check a seller's 
integrity. I just wish I'd have gotten this guy's contact info so I 
could trek out to his house for an up-close and personal chat... (and 
perhaps a little violence!)

n8

--- In AN1x-list@yahoogroups.com, "Dale Kay" <admin@k...> wrote:
> guessing something is drawing more power like you noticed.. it may 
be beyond simple fixes, take to repair place.
> 
> Otherwise, you will have to dig in. You will need a service manual 
and some equipment to check it out. Most in this area charge $45 an 
hour or so, unit is worth? Hard call, I know I be digging in on it 
but there is a tie where even I would either give to someone with a 
service manual or buy another. 
> 
> One idea I would do, (note I said " I ", may not be for you), pull 
the synth board out, power it up and see what it does. I read in a 
few posts that the unit works with the board out as a midi 
controller/sequencer.
> All that will tell you is, if it starts to behave right, the synth 
card is pulling in the power, as that is what I am thinking, a big 
draw... all guess work without seeing the unit and knowing the 
service manual. 
> 
> Review the cost to repair to a used one.
> 
> You did say for a while there you did use a 9 volt power supply and 
not the 12. There is a chance that the lower supply may have damaged 
the unit over time. 
> 
> All I said was basic electronic TS stuff...  if you can review the 
service manual, there might be some clear notes in there that mention 
this type of failure.
> 
> I asked about the cables in case of a floating ground, bad plug in 
the unit shorting out etc. Thought it best to ask if you gave it a 
try with all removed other than power. Wasn't if Jon that asked if 
the power plug was tight? I am sure you checked that too right?
> 
> dale
>