KevinE

If all else fails you might be able to use a bolt-on flange adapter mounted to the rear of the horn maybe. ebay link

A very earnest video but I'd be worried as the importer about liability, particularly with regard to the electrical safety of the design (let alone the quality control) , which may not necessarily be apparent until something major has already happened. Western branded chinese lights will have spent considerable time at testing labs in the UK or Europe before being put onto the market. Things like creepage & clearance, high-pot testing of the SMPSU transformers, flammability of the plastics used - you're only going to discover these little gotchas when the thing catches fire or shoves 230V up your DMX chain. I know a batch of chinese lights (I dont know the supplier) where they were all sent out with the earth wire not connected at the fixture end. I've personally seen all-steel enclosures with an IEC inlet with only 2 wires coming out of the back, that sort of thing. I haven't heard of anything recently but if a brand owner decides your lights could accidentally be mistaken for some of theirs, you're going to get a letter from their solicitor.

they're a 1-shot thing, recrimping might make it worse. ISTR the headers are proper pcb-mounted receptacles with latches. Some Mackies also have cable-mounted receptacles in addition though I dont know if that applies to yours. If you dont have any luck cleaning your noisy gain pots I might have some on a scrap panel, I think they're probably specials knowing Mackie.

you may be lucky rearranging the cables but the fault is usually the connection between the cable and the IDC portion of the connector that goes intermittent. And that's quite a few pins!

I've just ran the 'download to 2510' program from Martin to load a 2510 with 20 sequences. No problem there. I've saved it as a .b25 file in the default Martin folder on my C drive, it appears in the file list in the martin program and I can use it and it works. However I want to save a backup in my 'D' drive which is my files store. But, I can't navigate to it in W10 File Explorer. It does not appear. It is there in my 'recently used' section, and I can right-click and 'copy' it, but when I try to 'paste' it in my D-drive, I get an error 'file not found'. It also won't appear in a windows search. Is there a work-around or is it just an older file that (yet again) W10 can't cope with?

😃Well, I sorted it this morning. Probing the PFL multiplexer IC7 on the faulty module showed the output that feeds the left channel was not sitting at zero but about 0.5v. Selecting PFL caused the IC rails to offset by a corresponding amount which then slowly drifted back to 0. Changing the multiplexer IC7 effected a cure.

I'm ok on that score thanks! I'm working over tonight and have made progress. I've pulled out all the I/p modules and just used one as a tester - (a mono/mic channel) and it still did it. So, desultorily, I took the the test channel out and put the next one to hand in instead, and that did not cause a pop! So then I fitted the other channels, a mix of mono and stereo line back in, until I had every module PFL'ing without a pop. As you can imagine, when I fitted the one channel I'd been using for testing - it made all the other PFL switches 'pop'. It's this one mic channel causing the problem. It has been worked on before. Most of the fusible resistors have been changed; usually a sign of op-amp trouble; however all the op-amps are original. I'm beginning to wonder if an op-amp had failed, maybe gone DC and taken the fusible resistors out. They've been changed by A.N.Other - but the faulty chip is still there. Mass chip probing and probably changing will come on the Monday, had enough for today. I'll report back for anyone interested!

I'm trying to track down a slightly obscure fault on a Soundcraft Series 10 broadcast desk. When any PFL button is pressed, the PFL works fine but there's a POP through the left headphone and also the left PPM meter kicks hard over for an instant. It's only the left channel. The fault can be seen on the PFL 'L' bus that serves the modules. AFAIK, pressing a PFL button does 2 things: it sends a logic signal to the master section which controls the audio routing to whatever's selected to monitor the PFL (pres phones, studio phones, studio monitors, control room monitors, etc). And then it places the pre-fade channel signal onto the PFL L&R buses. The PFL action is working fine, everything is routed to the proper places and L&R audio finds its way through where it should. Just a POP ! Anyone had experience on these? I havent....

I don#t want to sound too northern but the closest I've got to onsite catering has been receiving vague directions to the nearest chip shop

I've had a go in the past fitting a capsule into the original plug-in module but it did not sound acceptable. I'll ring Showcomms but I think if its no longer on their stock list then it means it's no longer available.

I need a replacement capsule for an SKM100 handheld. It's discontinued by Sennheiser. Does anyone have any soruce for aftermarket ones, or a lead on any uk stock? It's the sort with the long body and plugs in. Be a shame to scrap an other wise good transmitter. It's for a pub singer.

are the ballasts from the same fixture manufacturer or did you source generic ones from aliexpress etc? The ones with fewer chokes might have omitted the PFC correction maybe.

I think the ispot150 was a genuine coemar product made in Italy. These are getting a bit old nowadays!

I've had a few mains RFI filters go bang in Robe fixtures, replacing them effects a cure. I think they probably use metallised paper capacitors inside which can fail short circuit if they've lain for any length of time without power.

not sure if this is overkill but the Showtec TR512 is ideal. It can also be remote mounted and controlled from a wall plate button panel. https://www.showtec.co.uk/onlineshop/index.php?route=product/product&product_id=997&search=tr-512

I'm insured through a broker, Marsh Commercial, who have supplied me with both Axa and Zurich policies. Marsh are pretty flexible with what they will and wont include on a policy.

probably varistors, (MOV's). Their job is not to go short but to 'absorb' transient overvoltage spikes, however they have their limits and will split or go short if they do fail due to such overload. Hopefully that will be the only problem and they can be replaced (typically a 230VAC fixture will use 275VAC rated varistors) but do make sure that's what they are and not something like an X or Y class suppression capacitor. Replace like for like! The last time I had some little roundish blue things fail in a Martin was in a MAC and they were capacitors in the electronic ballast. The IGBTs in the PFC circuit had also failed.

if the pump's giving grief I'd bung a new one in, about a tenner aren't they? I think the valve sticking is due to degradation of the rubber o-ring which causes the ball to stick to it.

Just wondering if anyone knows the going rate for renting an ongoing parking space/operating centre for a single 25ton curtain sider> UK Midlands rural.

Crickey, I didn't know they'd gone into liquidation. (jan, 2021 apparently). I ordered a replacement neutron star heater off them last month (sept) which arrived, as per usual, next day. I think the G300 is a smoke machine BTW rather than a hazer?

Hello, I should just say we're Cheadle Staffs, (close to Alton Towers) not Cheadle Hulme (cheshire).

I've just had an invoice from Thomann and can confirm what others have said, you treat the invoice as though it were from a UK company regarding the VAT, as the previous 'intra-community' rules no longer apply here. Their GB vat number is registered to a UK office (a cross-border VAT agent in Brighton) and as far as HMRC is concerned, that is where the sale has taken place. Where the goods are warehoused is largely irrelevant. I bought some 2500W xenon lamps as I couldn't get them from a UK supplier..ironically.

make sure the 3-wire ribbon to the fan speed control opto is making good connection as I think on some board revisions it gets its op amp 0V reference through it. I do know it can cause baffling symptoms. Also the power LED is involved in generating one of the references, in certain revisions (not all boards are the same!) so make sure that's lit ok. In very dirty amps I've had tracking underneath the jumper cable that joins the two boards...under the pcb header itself. I've had the odd minimelf 4148 go leaky, the odd metal oxide resistor go high and that sort of thing. What was the Q205 mod, the one where it snaps off at board level? Later ones held the pcb tight in a rebate machined into the heatsink. Sometimes the ribbon that connects the rear DIP switches to the ch1 ® pcb can go open in random places at the transition plug at the back. It can cause weird symptoms. I've had a faulty transconductance amp which causes mischief for example allowing it to drive one way but not the other. PS if the plating-through fails on the main bus caps (due to stress) it can interrupt one of the power DC lines mid-circuit with interesting results. However I'd have said this was a problem with mobile setups rather than an install.

worth mentioning that by April 2022 all VAT registered traders regardless of turnover must move to digital tax records by law.

I would suspect the motor losing torque, proved by bobbing a known good motor in there.