jexjexjex Posted September 27, 2011 Share Posted September 27, 2011 Hi Gang For the princely sum of £10 each, I've inherited a pair of DMX Betapack1's which the owner said were "... very dead, with the power lights not even coming on..." Having had a look inside each, there's no obvious signs of damage, but on both packs the glass fuse on the main board (Next to the incoming mains tail) is blown, which could explain a lot! My plan is to nip into Maplin tomorrow, as I'll be passing anyway, and get new fuses. I'll take one of the dead ones, but as there's no obvious code number written on them, can someone offer me a bit of guidance as to exactly what I should be asking for - Apart from "Can I have some of these?". I know that they're "100mA/230V 20mm Glass Fuses", but is there anything else I need to know? Link to comment Share on other sites More sharing options...
nickb12345 Posted September 27, 2011 Share Posted September 27, 2011 I know that they're "100mA/230V 20mm Glass Fuses", but is there anything else I need to know? Nope - that will get you exactly what you need :) Link to comment Share on other sites More sharing options...
TomHoward Posted September 27, 2011 Share Posted September 27, 2011 GL35Q for Maplin I think. (Though that's slow blow, not sure what the Betapack electronics fuse should be). Link to comment Share on other sites More sharing options...
boatman Posted September 27, 2011 Share Posted September 27, 2011 There are two fuse holders which also act as the voltage selector for the electronics. F1 is for 120V & F2 is for 240V. It is essential that only one fuse is fitted. As the fuse feeds directly into the transformer primary, it would be wise to fit an anti-surge type. If you contact Zero 88, they can supply you with a PDF version of the Betapack service manual. Link to comment Share on other sites More sharing options...
mutley Posted September 28, 2011 Share Posted September 28, 2011 The letter(s) in front of the Ampere rating will tell you whether you need fast blow or slow blow (or somewhere in between)... F = Fast (Flink)T = Slow (Träge - Pronounced "Trarg") Fuse markings explained Link to comment Share on other sites More sharing options...
adam2 Posted September 28, 2011 Share Posted September 28, 2011 To be strictly accurate it should be noted that the fuses refered to are not main fuses in the accepted sense of the word.A main fuse is generally understood to be one that is upstream of a number of other fuses, and therefore usually of much larger rating than the downstream fuses.An example would the main fuse for a house or similar, which is often 60, 80 or 100 amps. The fuses in question in the dimmers protect the transformer which supplies low power, extra low voltage to the control circuits common to all the dimmer channels Replace like for like, as others post, Maplin and others should have these. Link to comment Share on other sites More sharing options...
timsabre Posted September 28, 2011 Share Posted September 28, 2011 Also, it should be noted that fuses don't usually blow for no reason... replacing the fuses without fixing whatever caused them to blow, will just result in more blown fuses... Link to comment Share on other sites More sharing options...
Richard P-W Posted September 28, 2011 Share Posted September 28, 2011 Also, it should be noted that fuses don't usually blow for no reason... replacing the fuses without fixing whatever caused them to blow, will just result in more blown fuses... Unless the pack is wired for 3 phase and was connected to a supply that lost its neutral through a faulty contactor :unsure: Link to comment Share on other sites More sharing options...
boatman Posted September 28, 2011 Share Posted September 28, 2011 Also, it should be noted that fuses don't usually blow for no reason... replacing the fuses without fixing whatever caused them to blow, will just result in more blown fuses... Unless the pack is wired for 3 phase and was connected to a supply that lost its neutral through a faulty contactor :unsure: Or the fuse was placed in the 120V holder and the pack connected to a 240V supply! Link to comment Share on other sites More sharing options...
jexjexjex Posted September 28, 2011 Author Share Posted September 28, 2011 Two fuses later, I have a pair of fully functioning DMX Betapack Mk1s. For £20 + fuses that is surely a result in anyones book! Now, anyone want to buy a pair of DMX Beta... Link to comment Share on other sites More sharing options...
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