Grassie Posted February 26, 2016 Share Posted February 26, 2016 (edited) I have an original DOD FX62 bass stereo chorus pedal which won't power up with a 9v adapter. The blurb says to us a 10v adapter but it obviously powers up with a 9v battery. I want to daisy chain other 9v pedals to it as well. Am I missing something or just being monumentally thick...? Edited February 26, 2016 by Grassie Quote Link to comment Share on other sites More sharing options...
elephantgrey Posted February 26, 2016 Share Posted February 26, 2016 If it works with a 9v battery in, would something like [url="https://www.google.co.uk/search?q=DOD+FX62&oq=DOD+FX62&aqs=chrome..69i57&sourceid=chrome&es_sm=93&ie=UTF-8#q=9v+battery+adapter+pedal&tbm=shop"]this[/url] help maybe? Quote Link to comment Share on other sites More sharing options...
Grassie Posted February 26, 2016 Author Share Posted February 26, 2016 Edited original post - I want to daisy chain other 9v pedals to it. Quote Link to comment Share on other sites More sharing options...
JapanAxe Posted February 26, 2016 Share Posted February 26, 2016 2 possibilities spring to mind: - wrong polarity on the mains adaptor - if it's an early model with a 1/8in jack, that will be centre positive, whereas the Boss 'standard' used by the majority of makers is centre negative; or - there is an internal fault which is stopping current flowing form the DC jack to the circuit. Quote Link to comment Share on other sites More sharing options...
Grassie Posted February 26, 2016 Author Share Posted February 26, 2016 Soooo.....anyone want to buy an original DOD chorus pedal, with the original box....? Quote Link to comment Share on other sites More sharing options...
JapanAxe Posted February 26, 2016 Share Posted February 26, 2016 If you are passing Swindon I'll be happy to take a look at the pedal for you. Quote Link to comment Share on other sites More sharing options...
Grassie Posted February 26, 2016 Author Share Posted February 26, 2016 Not in the near future, on the Isle of Wight, so it costs me £50 return for me and the car... Quote Link to comment Share on other sites More sharing options...
JapanAxe Posted February 26, 2016 Share Posted February 26, 2016 Ah well, just thought I'd offer - I didn't realise 'Lost in space' means 'Isle of Wight'! Quote Link to comment Share on other sites More sharing options...
Grassie Posted February 26, 2016 Author Share Posted February 26, 2016 [quote name='JapanAxe' timestamp='1456504087' post='2989795'] I didn't realise 'Lost in space' means 'Isle of Wight'! [/quote] I might as well be... Quote Link to comment Share on other sites More sharing options...
Grassie Posted February 26, 2016 Author Share Posted February 26, 2016 [quote name='JapanAxe' timestamp='1456502970' post='2989760'] 2 possibilities spring to mind: - wrong polarity on the mains adaptor - if it's an early model with a 1/8in jack, that will be centre positive [/quote] 1996 model I think. Quote Link to comment Share on other sites More sharing options...
JapanAxe Posted February 26, 2016 Share Posted February 26, 2016 [quote name='Grassie' timestamp='1456505166' post='2989812'] 1996 model I think. [/quote] Could you post a pic of the pedal's DC socket? Quote Link to comment Share on other sites More sharing options...
Grassie Posted February 26, 2016 Author Share Posted February 26, 2016 [attachment=213381:WP_20160226_16_49_58_Pro.jpg] [attachment=213382:WP_20160226_16_50_21_Pro.jpg] Quote Link to comment Share on other sites More sharing options...
JapanAxe Posted February 26, 2016 Share Posted February 26, 2016 (edited) [quote name='Grassie' timestamp='1456505703' post='2989831'] [attachment=213381:WP_20160226_16_49_58_Pro.jpg] [attachment=213382:WP_20160226_16_50_21_Pro.jpg] [/quote] Ok that's a 1/8in jack socket. You need to be sure that you have positive going to the tip of the DC plug, negative to the 'sleeve'. The Pedal should work off 9V but it may have a bit less headroom. I used to have one of these, and I think I have the circuit at home (on hols at mo). I think DOD specify 10V because it drops about a volt across a diode that protects the circuit from incorrect polarity. If your lead is centre negative you will need to get an adaptor to reverse the polarity. Edited February 26, 2016 by JapanAxe Quote Link to comment Share on other sites More sharing options...
paul_5 Posted February 26, 2016 Share Posted February 26, 2016 Yup, JapanAxe is correct - that's a 1/8" centre positive adaptor. If you've tried using an adaptor and got the polarity wrong (used a centre negative) then you might have blown the polarity protection diode on the mains socket, which would explain why it's not running on a mains adaptor. It's an analogue unit using a 3007 bucket bridge chip, so I reckon it's well worth keeping hold of. Quote Link to comment Share on other sites More sharing options...
Grassie Posted February 26, 2016 Author Share Posted February 26, 2016 Thanks guys, might just stash it away and buy a new one... Quote Link to comment Share on other sites More sharing options...
Grassie Posted February 26, 2016 Author Share Posted February 26, 2016 BTW, I bought a new adapter to power this, with a 5 plug daisy chain. I knew that the socket on the pedal wouldn't fit so I also bought a plug tip converter, thinking it would be OK. Quote Link to comment Share on other sites More sharing options...
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