My 303 won't turn on
Moderator: TGN
My 303 won't turn on
As the title says my 303 just won't turn on for some reason. I used it last like 4 or 5 days ago and it was working perfectly then and has just been sitting on my shelf. Has anyone ran into this problem before??? I searched through some old threads on the topic but didn't really find anything helpful. I will be getting something to test the power supply tomorrow. Any help at all would be much appreciated, this SUCKS!!!

Re: My 303 won't turn on
Already experienced the death of my og404 two times : the first time, the adapter was dead, the second time it was a problem with a new unformated card.
I hope you'll be as lucky as me.
I hope you'll be as lucky as me.
I'm so french that my english is lofier than my beats
Re: My 303 won't turn on
If you have a roland groovebox, korg electribe or the like you can try it with those power supplies. It just needs to be 9v, 500mah (or up), with the center pin negative.
Those $4 multimeters from harbor freight are great for checking power adapters and there is usually a coupon for a free one with any purchase.
If you can verify that the adapter is good (by multimeter, or plugging it into another unit). Plug it in to the 303, power it on, gently and slowly move it around to see if the 303 lights up. If it lights up, more than likely you just need to open it up and reheat the solder joints around the power plug.
This problem happens a lot on the old korg electribes and is a super easy fix. The last 202 I had needed the same fix.
Those $4 multimeters from harbor freight are great for checking power adapters and there is usually a coupon for a free one with any purchase.
If you can verify that the adapter is good (by multimeter, or plugging it into another unit). Plug it in to the 303, power it on, gently and slowly move it around to see if the 303 lights up. If it lights up, more than likely you just need to open it up and reheat the solder joints around the power plug.
This problem happens a lot on the old korg electribes and is a super easy fix. The last 202 I had needed the same fix.
- zendanisdead
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Re: My 303 won't turn on
lol try shaking it

http://www.soundcloud.com/zendanisdead
HAWTKARL wrote:The last thing we need is another utube sampling digital lo-fi anime beat maker.
"If you want that '90s sound, record at 12 bit as HOT as you can."IIIII wrote:he can turn water into a beat, and feed a thousand dancehalls with only two drumbreaks
Re: My 303 won't turn on
Thanks for the replies guys, I have yet to get my hands on a multimeter but I'm feeling pretty sure it's a power supply issue. The one that came with it has definitely seen better days and I opened up the 303 this morning and everything looks perfectly fine inside. Unfortunately I don't have any other compatible power supplies to try so I'm stuck till I can test the one I have. Seems like they're not too expensive to replace so I'm really hoping that's it. Also shaking it did not work
that was the first thing I tried lol
Re: My 303 won't turn on
Finger crossed for you 
off topic : Seriously, since I consider to buy a sp303... I mean... is it really worth the price, according to its age ?
off topic : Seriously, since I consider to buy a sp303... I mean... is it really worth the price, according to its age ?
I'm so french that my english is lofier than my beats
Re: My 303 won't turn on
do ask for pics of power supply when purchasing off ebay. mine came with a third party adapter that exploded weeks later. luckily no damage to the SP.
Re: My 303 won't turn on
So I FINALLY got ahold of a multimeter and I'm pretty positive it's just my power supply that's broken.
https://www.amazon.com/SP-303-Sampler-r ... B00GQVJHY2
That's the one I think I'm gonna order, if anyone could let me know if I'm making a huge mistake it would be much appreciated but that one seems legit. It'll probably be a week or two before I can order it.
Yeah saladolar I would say they're absolutely worth the price, I've only owned the 303 and 404sx and I think the 303 effects sound a lot warmer and sweeter, plus ext in + resampling at the same time is a godsend. It's cool but sort of tedious to use on its own but you definitely learn some shit making whole tracks on just the 303. Pairing it with something with more capability like an mpc or a bigger sp has become my favorite way to make music.
https://www.amazon.com/SP-303-Sampler-r ... B00GQVJHY2
That's the one I think I'm gonna order, if anyone could let me know if I'm making a huge mistake it would be much appreciated but that one seems legit. It'll probably be a week or two before I can order it.
Yeah saladolar I would say they're absolutely worth the price, I've only owned the 303 and 404sx and I think the 303 effects sound a lot warmer and sweeter, plus ext in + resampling at the same time is a godsend. It's cool but sort of tedious to use on its own but you definitely learn some shit making whole tracks on just the 303. Pairing it with something with more capability like an mpc or a bigger sp has become my favorite way to make music.
Re: My 303 won't turn on
Personally I would order one with feedback/reviews, or one that at least has a picture or states the polarity of the plug.
https://www.ebay.com/itm/9-Volt-1A-DC-P ... Sw3utY5FhV
Whatever you get made sure you double check it with a multimeter before plugging it in to your 303
https://www.ebay.com/itm/9-Volt-1A-DC-P ... Sw3utY5FhV
Whatever you get made sure you double check it with a multimeter before plugging it in to your 303
- zendanisdead
- Member
- Posts: 388
- Joined: Tue Jul 26, 2016 3:20 pm
Re: My 303 won't turn on
Crane wrote:Personally I would order one with feedback/reviews, or one that at least has a picture or states the polarity of the plug.
https://www.ebay.com/itm/9-Volt-1A-DC-P ... Sw3utY5FhV
Whatever you get made sure you double check it with a multimeter before plugging it in to your 303
ugh i don' t want to buy a multimeter
is there a cheap good one i should get
http://www.soundcloud.com/zendanisdead
HAWTKARL wrote:The last thing we need is another utube sampling digital lo-fi anime beat maker.
"If you want that '90s sound, record at 12 bit as HOT as you can."IIIII wrote:he can turn water into a beat, and feed a thousand dancehalls with only two drumbreaks