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About jocky581

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    Rat Race Player

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    North Norfolk, South Lincs
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    pinball, films, cars, Aircraft.


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  1. have to say, it looks really good those LED's are just fine, worth the effort, I envy that machine, fancied one for the games room.
  2. jocky581

    Lamp issue

    we try, but it does not always work
  3. jocky581

    Lamp issue

    so can this be the end of this long running saga then?
  4. jocky581

    Lamp issue

    get a good quality switched mode psu, check the specs for input voltage range, output voltage and minimum out put load, expect you will be fine, especially if you can find one that will meet your 28 volt input. have fun, should last years and bring a sparkle back to that jukebox
  5. jocky581

    Lamp issue

    I can only go by what is said, yes it might be a PSU issue, hence why I asked about the battery box, over volting an LED will drive the current so high and blow it, I would get a set of fairy/xmas lights, fancy flashing sequences, and check the input voltage, switched mode might be 100 to 240 volts, and pick up a mains take off from the PSU, nice if you can find a set that will take 48 volts, but best to keep what ever was designed to light the things up by the manufacturer, and control the supply to that, simple relay from the lighting circuit, ect, but thats just my opinion.
  6. jocky581

    Lamp issue

    you may just have got a duff set, Did you use the battery box to hook up to, or cut it off, remember that LED's are actually current devices, 0.6v DC with 10mA average, current will increase with brightness, and this might show as an increased supply voltage, are you sure the batteries were series connected, to give 4.5 volts, or were they parallel to give more current at 1.5 volts, it possible the battery box has a simple LED driver circuit. but at least this time you got a couple of day light.
  7. jocky581

    Lamp issue

    your just cursed when it comes to any form of lighting, the gods of illumination have it in for you...
  8. did they light, did you check each string, each fourth bulb should be on the same string, if you have a controller issue you might be seeing a back-feed from an adjacent string if the common has been lost, there are a multitude of things to check, and one error, your can be back to square one, I think you have already reached the conclusion, you cant fix them, there is some fault you cant trace. and sorry but no chance we can via a forum, given the information available. we have run through the steps, but your information is not complete enough to diagnose any issues, which should have be
  9. you really need to strip back the insulation on one working bulb, and then measure the volt drop across that bulb when lit, this is the working bulb voltage and if you multiple that by 30 you will have the supply voltage out of the controller for each string of lamps, at least that will tell you f that control box is upscaling the voltage from 24v its supplied with from the juke box. if needed you can buy 120 bulbs of the correct value and build a whole new loom, or just remove the bulb holder and use some heat shrink tubing, or salvage the plastic bases from the old bulbs and insert new
  10. As they are series, the current is common to all the bulbs, but the voltage is shared by each bulb, 24 volts divided into 30 bulbs, is 0.8 volts per bulb, this seems very low, I am wondering if that control box has a step up voltage system, that gives say 110v so then each bulb would be around 3.66v, and if 220v then 7.2v at 1.5 volts per bulb, the voltage should be around 45volts, its difficult to measure the voltage at any given socket as it requires the string to be fully working, if its to give a reasonable answer, if you put a high impedance meter such as a DVM in series, the reduced
  11. ok, just earlier you thought they were 5 volt lamps, if you can power them up you can follow the instructions i posted earlier to test the bulbs and just work through them. if it was me, i would install the led set, just to get the jukebox up and running and looking the part, while you spend the time sorting out the old set. while you source a replacement bulb and get the old set working, its that 24v that will be the issue, if you intend just to buy a set from asda/tesco/argos ect, they will be fine for 240, but you might be able to pick up a supply from the input
  12. you really need to check that voltage, 24v on 120 bulbs is not normal for series connected bulbs, i have a similar set i dragged out of the attic they were four series strings of 30 bulbs, on mine the blue string has failed and i think that was down to the controller,, i would bet your set is 240 volts not 24. but good luck on your quest.
  13. looking at the questions on batteries and MPU5 they are generally all about the MPU5 main board, but think that's to be expected, as all the main board have a back up battery, where only a few program cards have them. But i did read on some posts about warnings that changing out the battery can cause a unrecoverable failure. but i don't know if you have one of these.
  14. and on that one, your guess is as good as mine on that, as not all program cards use a back-up battery, think its only those that need a real time clock
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