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http://cpc.farnell.com/stontronics/t6355st/ac-dc-power-supply-12v-2a-vi/dp/PW04224?mckv=s2D8F4QFD_dc|pcrid|72935558297|kword||match||plid||pid|PW04224|&CMP=KNC-GUK-CPC-GEN-SHOPPING-STONTRONICS-Power_Supplies-PW04224
I would suggest you buy from a reputable source, gash supplies from 'Zon' can ne noisy. Maplin also have the pt# R50 CW . 3amps but that will not matter. You may need to adapt/re-wire to get the correct polarity.
N.B! I strongly urge anybody 'fooling' with PSUs to buy a test meter. I have several but my £5.00 'Blackspur' is more than good enough for PSU tests. You MUST get that polarity right!!
Dave.
"Take these three items, some WD-40, a vise grip, and a roll of duct tape. Any man worth his salt can fix almost any problem with this stuff alone." - Walt Kowalski
"Only two things are infinite - the universe, and human stupidity. And I'm not sure about the universe." - Albert Einstein
You can of course chop the cable and flip it then heat shrink the result. MUST check you have got it right with a meter tho'but!
I have recently binned a few old PSUs (50Hz types, mainly for phones) but I always chop the leads off and save the moulded plug.
Dave.
If you have no luck yourself I can send you one already done for £15
I found a suitable supply in my box of spares!
It's the same as one of these… https://www.maplin.co.uk/p/worldwide-60w-acdc-multi-voltage-power-supply-l11bq - although I'll need to find the tips and there's no mains cable with it.
It is a bit overkill though, at 5A capacity. Maplins also do this one (with very poor photos, but the spec is correct) - https://www.maplin.co.uk/p/maplin-27w-switch-mode-acdc-for-general-use-n47ed
Given that Maplins aren't a maker and just rebrand things and add a markup, you may be ale to find the same thing for less elsewhere.
"Take these three items, some WD-40, a vise grip, and a roll of duct tape. Any man worth his salt can fix almost any problem with this stuff alone." - Walt Kowalski
"Only two things are infinite - the universe, and human stupidity. And I'm not sure about the universe." - Albert Einstein
I've got a switchable one which allows voltage selection (inc. 9V & 12V) and also polarity; I think it's a generic brand. I do have a 12 cente -ve mini 3-channel mixer which I use it with.
The wierdest one I have is 16V AC, for a Peavey 19" rack synth unit! I've been trying to find a replacement for one of those for a while...
You'll be lucky - AC supplies are now rare, due to modern regulations restricting off-load power draw. Finding one is not helped by the Yanks calling anything which plugs into the mains (which they call 'the AC') an 'AC power supply'. A *lot* of people get caught like that, and buy the equivalent *DC* supply instead - which doesn't work, but rarely causes damage.
I'll have another look in the box of spare supplies later.
"Take these three items, some WD-40, a vise grip, and a roll of duct tape. Any man worth his salt can fix almost any problem with this stuff alone." - Walt Kowalski
"Only two things are infinite - the universe, and human stupidity. And I'm not sure about the universe." - Albert Einstein
@ICBM why did Boss do the centre neg thing again .... I know it's come up before but I can't remember what the reason was behind it ?
They could quite easily have done it with the switch in the negative though, so it may be just that they wanted to force people to buy their - at the time unique, as well as expensive - power supplies.
"Take these three items, some WD-40, a vise grip, and a roll of duct tape. Any man worth his salt can fix almost any problem with this stuff alone." - Walt Kowalski
"Only two things are infinite - the universe, and human stupidity. And I'm not sure about the universe." - Albert Einstein
Prowla. The Blackstar HT pedals originally used a 16V 800mA line lump AC supply. I think B's still stock a few so if that rating is right for the Yammy rack it might be worth contacting them? No guarantee that the co ax power plug will fit so you might have to kludge it as I mentioned (and IC frowned upon!)
'Twere me! I would just get a 16V toroid (15V of adequate rating would do*) and put it in a tin. The problem is of course the mains side would need to be done by a qualified tech (and the thing PAT'ed if sold)
I have read of at least two reasons for neg centre? First Germanium transistors needed a +Ve chassis and so a negative sleeve would short on exposed metalwork. Then, V early pedals and such used a 3.5mm mono jack. Same problem, tip would sparkypoos!
After the change to Silicon and co ax they COULD have got it right of course but some t**t just didn't!
*Say you used a traff twice the current rating? The output voltage would not dip so much on the lighter load and be close to 16V. Off load the Bstr supply delivers ~22 volts! (ANOTHER reason why SMPSUs are much better!)
Dave
While here about V early HT pedals? They can develop a fault whereby they draw nearly twice 800mA (HT goes to near 450V!) Unhelpfully the pedal still works so you do not know FA until the AC PSU dies.
If you ever get a dead HT pedal supply DON'T just buy a spare. Get the pedal off to B's or an approved tech'.
Dave.