Roland XP-50 all Capacitors replaced with equal values

1

A few years ago, I took my Roland XP‑50 to a repair shop to have the capacitors replaced. They replaced all of them, but from what I remember, they used the same values for every capacitor (I don’t recall the exact values right now).

The keyboard powers on and works, but it now takes longer to start up. Also, when I press the keys harder, the sound/volume actually drops, which makes it very difficult to use.

Fortunately, I took photos of the board before the replacement, so I can see the original capacitor values.

My question is: where is the best place to buy the correct replacement capacitors? I’ve looked on Amazon and eBay, but I see different shapes and types available, and I’m not sure whether the shape matters.

Any guidance would be greatly appreciated. Thanks!

2

Can you post a photo of the original caps? Depends where you live in the world to get the right caps, but there’s electronic component stockist everywhere. Aliexpress also have a fantastic range

3

Here is the board before the capacitors were replaced

IMG_8277-1
IMG_8277-11920×1258 1.1 MB

4

So if the capacitors have failed, they will show a low resistance.

I assume it’s the polymer aluminium can caps on the picture?

Google the markings on them to find the capacitance and voltage rating.

There’s a Service Manual for this keyboard too.

5

I’m in Los Angeles,

Here are some photos of the board with the new capacitors installed, now I see that not all of them were replaced. Maybe I need to replace all of them.

do you know of a place that can replace them?

(original capacitors on the right, on the left is what the shop used to fix it. but it’s not 100% working)

sample3
sample31444×734 378 KB

sample2
sample21550×786 444 KB

sample1
sample11513×834 373 KB

6

That’s a proper mess! Some of the caps aren’t the correct values either.

They should have used like for like parts.

Whether this is the cause of your issues is uncertain, but needs resolving before you continue.

7

I don’t know where could I take it to be fixed so…

I will give it a try myself. I have very little experience soldering, just have done some XLR cables and speakers, but I think the concept is the same.
1 - would it be OK if I use the same capacitors type as the ones on the left? or should I use the ones that originally came with the board?

2 Would any solder wire work? or do I need a special one?

3 My current soldering pen doesn’t have temperature checker, so I don’t know how hot it gets, would it be ok?

4 what else would I need?

8

1 - I’d replace with the ones similar to the originals.

2 - Use standard leaded solder

3 - Might be worth investing in a decent soldering iron. They aren’t too expensive. Get some different bits too.

4 - Decent flux and solder braid to remove excess solder.

Take your time and practice. Watch some videos on soldering techniques removing caps.

9

Thank you for following up and for your input, I really appreciate it.

If I ever successfully accomplish this I will post the results here.

10

Whoever did this ripped you off completely. This is not professional by any standards, its the equivalent of amateur hour in the alley by the last chance dumpster.

If your in LA try here;

11

Thanks, will give them a call…