| Author |
 Topic  |
|
|
Dr. Bob
Moderator
Australia
6593 Posts |
 Posted - 08/13/2007 : 15:52:48
|
Hi Guys
I am looking for a schematic for the Dean Markley Overlord III
Overdrive pedal.
Not the Valve Overlord, but the one that use a JRC4558 op-amp.
My unit suffers from Tone suck so bad, I get less than 30% of the guitars signal, in bypass mode.
So I guess it really suffers from Volume Suck... 
This is really great sounding overdrive & seem to work normally when activated.
It give a very nice rock overdrive sound, much nicer than my Ibanez TS10 Screamer, & some other overdrives that I own.
It would be a great live sound pedal.
I really like using this pedal, but the Volume Suck, is too big an issue to ignore, other than for making a bypass looper.
I have the Sch. for the valve version.
Regards Dr. Bob |
|
|
Dr. Bob
Moderator
Australia
6593 Posts |
Posted - 02/15/2009 : 12:56:12
|
Hi Guys
A quick update on this repair.
After a bit of  , I have now repaired this unit.
But I'm still chasing the schematic, for my archives.
It's the Op-amp based Overlord III not the tube version.
Regards Dr. Bob |
 |
|
|
Dr. Bob
Moderator
Australia
6593 Posts |
Posted - 03/02/2009 : 08:24:29
|
hi guys
apologies for bumping this old thread.
we have a lot of new guys here over the past few months/years,
perhaps someone has seen this schematic?
regards bob |
|
|
|
Dingus
Silver Member
USA
472 Posts |
|
|
Laurie
Double Platinum Member
Canada
4854 Posts |
Posted - 03/04/2009 : 14:43:15
|
quote:
Originally posted by Dr. Bob
Hi Guys
After a bit of , I have now repaired this unit.
What was wrong with it? |
|
|
|
Dr. Bob
Moderator
Australia
6593 Posts |
Posted - 03/04/2009 : 14:47:51
|
quote:
Originally posted by Laurie
quote:
Originally posted by Dr. Bob
Hi Guys
After a bit of , I have now repaired this unit.
What was wrong with it?
Hi Laurie & guys
It was a the FET bypass switching, the one of the FETs, went into a fixed resistive fault.
This why the pedal was "sucking the volume level" in bypass mode.
Regards Dr. Bob |
|
|
|
Dr. Bob
Moderator
Australia
6593 Posts |
Posted - 05/02/2009 : 18:56:40
|
Hi Guys
I'm just bumping one of my older threads.
Just in case anyone, or a new member has this schematic.
Or knows of one on the web, as I don't really want to pay some place $8-10 for a photocopy.
Please remember it's the Overlord III with the op-amp.
Not the Tube version, I have the Sch. for the tube version.
Regards Dr. Bob
|
|
|
| |
Topic |
|
Dean Markley Overlord III Schematic needed
