Allen & Heath XONE92 DJ mixer PSU board - (003-233JIT)

[firespace]

Re: Allen & Heath XONE92 DJ mixer PSU board - (003-233JIT)

Hi PeteS,

Thanks for the clarification and added info, living in CA I doubt you would have any UK links, though even any USA based linkage for suppliers able to post to UK would be really helpful, I had a sniff about with google but had very limited results for the ZLG series or any of the others you mentioned.



FireSpace

[firespace]

Re: Allen & Heath XONE92 DJ mixer PSU board - (003-233JIT)

Hello Scenic,

Thanks so much for your helpful advice, which I'm gonna gratefully accept So I will replace all the Samwha crapcaps.. yay!

Here is all the stats for the remaining caps I could find, I believe the transformer winding is still fine, just looks a bit erm.. melted hehe.


4. (C61, C62, C58 board locations). Jamicon 324C4(M), 63V 120uF 105°C (M) - Width 8mm Hight 16mm

5. (C57 board location). Samwha SD series, Model R7A, 400V 10uF 105°C (M) - Width 10mm Hight 21mm

6. (C57 board location). Samwha SG series, Model R8E, 50V 10uF 85°C (M) - Width 5mm Hight 10mm (might be 11mm hard to tell)


I have included a new location image.

Thanks also for mentioning the ESR rating being different, it was bothering me that that was the closest I could find, not helped by my incompetent use of the Farnell selection tool.

PeteS's suggestion that I use Rubycon ZLG series seems like a nice upgrade, (thanks Pete ) but I have been utterly unable to find a supplier who will ship to the UK, I expect having looked on google ZLG are a little sought after by HiFi buffs, but alas no UK or even US suppliers for that exact cap! Any links to buy these things would be amazingly helpful!!

Also I neglected to mention your dead right "can size is important”
because there is a safety cover that goes over the top of the board, and is no doubt the reason the caps failed because it overheated (well that and the fact they are crappy caps), pictures included, as you can see there is only 27mm headroom from the board, I suppose since there is room in the mixer I could put a 30mm cap in and leave a 3mm gap, might even help with cooling and ventilation.



FireSpace

[PeteS in CA]

Re: Allen & Heath XONE92 DJ mixer PSU board - (003-233JIT)

The Rubycon ZLG is even lower impedance than the ZLH, so it also might be an option, if available and in the appropriate case size. I'd also look at Nichicon and United Chemicon (= Nippon Chemicon), especially for that 400V cap. Both have GP and long-life fluorescent ballast-grade series worth looking at, if available.

R6A and R0A are probably just cryptic datecodes.. not really important.

Concur. Other mfrs use YYWW (Year Year Week Week) or WWYY, maybe with an extra character or two to identify the plant location.

[Scenic]

Re: Allen & Heath XONE92 DJ mixer PSU board - (003-233JIT)

Replace all Samwha crapcaps.

WB series is discontinued since 2009 according to Samwha's own site. They suggest replacing it with their MZ series.
Panasonic FR series is close in specs to Samwha RZ (for 25V 470uF 10x12.5) if you can get them from somewhere. (preferably not ebay.. lots of fakes out there)

The Rubycon ZLJ you linked to has noticeably higher ESR (0.053) than Samwha MZ (0.038 ESR).
ZLH series on the other hand would be almost identical (0.039 ESR) to Samwha MZ series (the WB replacement)
Again, this is for 10mm dia x 12.5mm height, 25V 470uF .. can size is important

R6A and R0A are probably just cryptic datecodes.. not really important.

So for the 4 brown turds.. err.. I mean Samwha's, Rubycon ZLH would make a good replacement.

As for the primary cap (the 400V 68uF), this one should do. If you really want a 105°C cap in its place, that one should do the trick if you have enough room to fit a 30mm high cap (and put the PSU where it's supposed to go)

What are the other caps on the board? The smaller ones in between the brown turds and the ones to the right of the big primary cap in the first pic. I mean.. you're in there already, so why not do a complete overhaul?

As for the leaked electrolyte.. clean that up ASAP. It can corrode the traces.
https://www.badcaps.net/forum/showthread.php?t=8364

[firespace]

Hello all,

I am intending on fixing my A&H PSU board myself, since I cannot afford the £100+ for a new board, I can visibly see that some of the caps are bulging on the board and one has leaked (see pictures).

The caps are as follows


1 (C57 board location). Samwha HC series, Model R3D, 400WV 68uF 85°C (M) - Width 22mm Hight 20mm
Intended replacement - Electrolytic Capacitor Samwha HK series, Model C92, 400WV 68uf 105°C (M) - Width 22mm Hight 20mm I in fact found the exact replacement, but I believe I am correct in thinking the higher rated 105°C will afford a better performance and lifespan with no down side.

2. (C64, C65, C67 board location) Samwha WB series, Model R6A, 25 V 407uF 105°C (M) Width 16mm Hight 10mm
Intended replacement - RUBYCON - 25ZLJ470M10X12.5 - CAPACITOR, RADIAL, 25V, 470UF

3. (C66 board location) Samwha WB series, Model R0A, 25 V 407uF 105°C (M) Width 16mm Hight 10mm - Here I have a problem and the problem is this capacitor seems to be EXACTLY the same as the one listed above (2.) except that it seems not to have failed (so looks shorter in hight but isn't) and has a different model number (R0A) I know that the ripple current rating is VERY important in this type of PSU and the R6A has a ripple current rating of 1430 ((mA rms) 105°C 100kHz) so maybe the different model number was a specific rating, unfortunately I cannot find specs on it and therefor have no way of knowing what hidden qualities it's replacement might have to have.

If anyone can recommend a replacement as close to the same spec or higher I would really appreciate it, I am a novice at this and I know that PSU's need to be right since the voltages involved are very high, also honestly A&H mixers aren't cheap and I cannot afford to inadvertently fry any other components. hehe

So any other suggestions or advice would be wonderful. I also found this nice bit of info on these caps that might be of help for others looking for info on these caps visiting the board.

http://forums.cnet.com/7726-13973_102-3130121.html