Angelus Posted October 4, 2023 Share Posted October 4, 2023 Done a PA hire and sound for a friends band and one of the tops wouldn’t power up ( Behringer DR112DSP ). It’s out of warranty and looking for somewhere in central Scotland that repairs digital amps. I realise not everyone here is in central Scotland, so no big deal if no one has used anyone, I’ll do some googling. I did have spare speakers, so the gig wasn’t a complete failure and I’ve ordered another speaker in case that one is toast. Quote Link to comment Share on other sites More sharing options...
Downunderwonder Posted October 5, 2023 Share Posted October 5, 2023 There's a thread for recommended techs stickied in Repairs forum. Quote Link to comment Share on other sites More sharing options...
Dan Dare Posted October 5, 2023 Share Posted October 5, 2023 It'll probably need a new amp module. They often aren't repairable, especially if made from Chinesium. May well cost more than buying a complete new speaker to get it repaired even if it's possible. 1 Quote Link to comment Share on other sites More sharing options...
Phil Starr Posted October 5, 2023 Share Posted October 5, 2023 As above most class D amps aren't repairable. when someone borrowed and blew my Behringer a few years back I did find someone in the UK who stocked replacement boards. At the time is was around £100 for complete amp and power supply which I thought reasonable. It will have gone up but you might be lucky. 1 Quote Link to comment Share on other sites More sharing options...
JPJ Posted October 6, 2023 Share Posted October 6, 2023 As Phil says, often easier just to replace the amp module completely. When one of my EV's blew the amp, I got the complete amp/dsp module for under £200. 1 Quote Link to comment Share on other sites More sharing options...
Chienmortbb Posted October 6, 2023 Share Posted October 6, 2023 There are some that will attempt to repair Class D and SMPS. However, naughty Behringer do not publish their service info. The service agents in the UK are quite helpful within the limits of their contract with Music Tribe. I have the guts of @Phil Starr's blown Behringer, and it was that amp, not the power supply, that was faulty. Sadly, the amp was a class D Chip, now fully obsolete. To be fair it was very well put together. Quote Link to comment Share on other sites More sharing options...
Chienmortbb Posted October 6, 2023 Share Posted October 6, 2023 On 04/10/2023 at 19:45, Angelus said: Done a PA hire and sound for a friends band and one of the tops wouldn’t power up ( Behringer DR112DSP ). It’s out of warranty and looking for somewhere in central Scotland that repairs digital amps. I realise not everyone here is in central Scotland, so no big deal if no one has used anyone, I’ll do some googling. I did have spare speakers, so the gig wasn’t a complete failure and I’ve ordered another speaker in case that one is toast. If you don't mind the shipping cost to outer Mongolia, or Dorset if you prefer, I will have a look at it for you. 3 Quote Link to comment Share on other sites More sharing options...
Angelus Posted October 7, 2023 Author Share Posted October 7, 2023 Been told, by my friendly electronics expert, the fault is in SMPS control section. Sadly he can't isolate exactly which component is faulty without access to full workshop manual. He doesn't even recognise the type numbers of the individual components. 🙄 Is it still worth looking for courier costs to Dorset? Quote Link to comment Share on other sites More sharing options...
mep Posted October 7, 2023 Share Posted October 7, 2023 We were lucky after our EV ZLX15P blew up. We found a guy who repaired the board for £60! A new amp module was just over £300. Quote Link to comment Share on other sites More sharing options...
Hacksawbob Posted October 13, 2023 Share Posted October 13, 2023 I might be way of the mark here, but if the switched mode power supply is blown then so long as you match the voltage and amps of the original could you not substitute a power supply of similar specs? Quote Link to comment Share on other sites More sharing options...
mep Posted October 13, 2023 Share Posted October 13, 2023 Correct. We were offered a similar 'repair but luckily found someone to fix the circuit board. Quote Link to comment Share on other sites More sharing options...
Chienmortbb Posted October 16, 2023 Share Posted October 16, 2023 On 07/10/2023 at 17:58, Angelus said: Been told, by my friendly electronics expert, the fault is in SMPS control section. Sadly he can't isolate exactly which component is faulty without access to full workshop manual. He doesn't even recognise the type numbers of the individual components. 🙄 Is it still worth looking for courier costs to Dorset? Can you take some pics of the inside.? 1 Quote Link to comment Share on other sites More sharing options...
Angelus Posted October 16, 2023 Author Share Posted October 16, 2023 9 hours ago, Chienmortbb said: Can you take some pics of the inside.? Booked it in today at Fretronics in Glasgow, been told they’re reliable and very good with these sorts of things. Will update on what they say when I hear back. 👍 Quote Link to comment Share on other sites More sharing options...
Angelus Posted November 16, 2023 Author Share Posted November 16, 2023 On 16/10/2023 at 08:24, Chienmortbb said: Can you take some pics of the inside.? I’ve got it back now, still unrepaired, so I’ll take pictures this weekend. Apparently the power module has failed and Behringer won’t supply one to anyone, but told me to contact an authorised repairer. Bought a new one a couple of weeks ago, went to use it last night for the first time and the handle snapped off. 🙄 Quote Link to comment Share on other sites More sharing options...
Chienmortbb Posted November 18, 2023 Share Posted November 18, 2023 On 16/11/2023 at 19:29, Angelus said: I’ve got it back now, still unrepaired, so I’ll take pictures this weekend. Apparently the power module has failed and Behringer won’t supply one to anyone, but told me to contact an authorised repairer. Bought a new one a couple of weeks ago, went to use it last night for the first time and the handle snapped off. 🙄 Not the best advert for Behringer, either the PSU failure or the broken handle. I am still interested in looking at the insides, though. 1 Quote Link to comment Share on other sites More sharing options...
Angelus Posted November 18, 2023 Author Share Posted November 18, 2023 1 hour ago, Chienmortbb said: Not the best advert for Behringer, either the PSU failure or the broken handle. I am still interested in looking at the insides, though. Maybe posting the module down would be cheaper than posting the whole speaker? 🤔 Quote Link to comment Share on other sites More sharing options...
Chienmortbb Posted November 18, 2023 Share Posted November 18, 2023 Send a pic first. 1 Quote Link to comment Share on other sites More sharing options...
Angelus Posted November 20, 2023 Author Share Posted November 20, 2023 Not forgetting I’m an old steam boiler engineer and these things are not my forte, but here are the pics I took. Let me know if I e photographed the wrong thing. Quote Link to comment Share on other sites More sharing options...
Angelus Posted November 20, 2023 Author Share Posted November 20, 2023 Found the fuse missing and one of the lugs bent over. 🙄 Clearly not going to work like that. Quote Link to comment Share on other sites More sharing options...
Chienmortbb Posted November 20, 2023 Share Posted November 20, 2023 Well, that will not help. Can you straighten it? Quote Link to comment Share on other sites More sharing options...
Angelus Posted November 21, 2023 Author Share Posted November 21, 2023 Straightened now and will pop a fuse in after dinner. 👍 Quote Link to comment Share on other sites More sharing options...
Angelus Posted November 21, 2023 Author Share Posted November 21, 2023 Fuse in and powered up, completely dead display and no power led, but 240v on both the boards. What am I missing? 🙄 Quote Link to comment Share on other sites More sharing options...
Hacksawbob Posted November 21, 2023 Share Posted November 21, 2023 I can't find a schemtaic for this, but you never know Behringer might send you one. I'm no expert on this stuff but my general approach is ... Visual inspection look for anything burnt, leaking capacitors, corrosion etc. Obvious stuff like checking if a physical switch has continuity, look for a thermal NTC fuse (black disk) and check fo rcontinuity. Anything like that blue relay with a model number you can lookup its spec sheet and see what it does https://datasheetspdf.com/datasheet/SMIH-05VDC-S-L-A.html. In order to get the DC that runs internally there will be a transformer then a bridge rectifier OR a switch mode power supply like you get in the brick that supplies a laptop, although in my limited experience switch mode is usually too noisy for audio applications. The holes in the board and white lines denote that you are still on the high voltage side there, Follow the traces and see what comes after it. Sometimes voltages are printed on the PCB, carefully (because 240V ) have a poke about with a voltmeter with the negative lead on ground and see if you can determine whether there are any DC voltages after the High side, try not to touch 2 components at once! Sorry just a jumbled mess of stuff there but you are trying to to spot anything that looks wrong or stands out. 1 Quote Link to comment Share on other sites More sharing options...
Angelus Posted November 22, 2023 Author Share Posted November 22, 2023 The first guy I gave it too had the schematic and tried all he can. I then sent it to the electronics expert, who is currently giving some pretty high profile bands gear the once over before going on a world tour and he said he couldn’t find a failed component, or get Behringer to supply him with spares. 🙄 Quote Link to comment Share on other sites More sharing options...
Angelus Posted November 25, 2023 Author Share Posted November 25, 2023 On 21/11/2023 at 23:29, Hacksawbob said: I can't find a schemtaic for this, but you never know Behringer might send you one. I'm no expert on this stuff but my general approach is ... Visual inspection look for anything burnt, leaking capacitors, corrosion etc. Obvious stuff like checking if a physical switch has continuity, look for a thermal NTC fuse (black disk) and check fo rcontinuity. Anything like that blue relay with a model number you can lookup its spec sheet and see what it does https://datasheetspdf.com/datasheet/SMIH-05VDC-S-L-A.html. In order to get the DC that runs internally there will be a transformer then a bridge rectifier OR a switch mode power supply like you get in the brick that supplies a laptop, although in my limited experience switch mode is usually too noisy for audio applications. The holes in the board and white lines denote that you are still on the high voltage side there, Follow the traces and see what comes after it. Sometimes voltages are printed on the PCB, carefully (because 240V ) have a poke about with a voltmeter with the negative lead on ground and see if you can determine whether there are any DC voltages after the High side, try not to touch 2 components at once! Sorry just a jumbled mess of stuff there but you are trying to to spot anything that looks wrong or stands out. Had a good look, even got my magnifying glass out, but can’t see anything. 🙄 Looks like it’s going to end up a passive speaker? 🤷♂️ Quote Link to comment Share on other sites More sharing options...
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