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  1. bushtech

    Power supply for little halogen light popped

    Thanks St Edd I took the bull by the horns, connected the second leg of the resistor, disconnected the dim bulb, took a deep breath and switched on. No smoke:) Reinstalled the light and we'll see how it goes. I've got extra 13005's and resistors so if it blows this thread will be revisited...
  2. bushtech

    Power supply for little halogen light popped

    Between 0.1 and 0.2V measuring over the 2 legs of resistor. My DMM cant read another digit. Could running it through 60W dim bulb tester be causing the low current?
  3. bushtech

    Power supply for little halogen light popped

    Yes, light is burning brightly. measuring current between one leg of resistor and where that leg of the resistor should be soldered in.And this is after the resistor, downstream. Voltage drop how? between each end of resistor and ground respectively
  4. bushtech

    Power supply for little halogen light popped

    Parts finally arrived, sigh. Replaced the 13005's and installed a 1.5Ω resistor and then measured the current after the resistor.Light came on and dim bulb tester stayed off (60W globe) This is what the ammeter shows: Could it really be drawing 14.5μA
  5. bushtech

    Need help identifying an electronic component

    Great stuff thanks St Edd. Now to get my Grundig Yachtboy working
  6. bushtech

    Comedy Thread

    pebcac: problem exists between chair and computer
  7. bushtech

    Comedy Thread

    and my best: pebcac
  8. bushtech

    Grundig YB500 World receiver fixup and panelbeat

    Thanks Bertus, all good advice. Just wondering if they are something special like the M might stand for multilayer or something
  9. bushtech

    Grundig YB500 World receiver fixup and panelbeat

    I now suspect that they are also Rubycon's as the Rubycon's carry the same 1M numbering you see below the R. Now need to figure out if there was anything special about the Rubycon 1M series caps. Must bediscontinued as I can't find anything about them on the Rubycon site
  10. bushtech

    Grundig YB500 World receiver fixup and panelbeat

    Thanks John On the same topic. The caps I can't ID are these with the R logo Anybody know the Manufacturer? Cant see it in our resources section
  11. bushtech

    Grundig YB500 World receiver fixup and panelbeat

    I am looking at the caps in that area.However that raises some questions. This is the first time I am fooling around with something that involves radio spectrum. Looking at the caps the voltages make me wonder. List of voltages on caps: 6.3V 10 16 25 35 50 100V Why on earth would somebody use a...
  12. bushtech

    Grundig YB500 World receiver fixup and panelbeat

    Heh! Look at first photo at start of thread
  13. bushtech

    Grundig YB500 World receiver fixup and panelbeat

    Say Wha?! 46 caps at a quick count:eek::eek: Yeah, probably copper oxidisation.Some of it very persistent. I take continuity readings every now and then just to see that I don't get too enthusiastic The set was working before I started so I'll take cap replacement under review.:D
  14. bushtech

    Grundig YB500 World receiver fixup and panelbeat

    That sort of IPA I know well:rolleyes: I tried all sorts of stuff, but was a bit leery of genuine rust remover. Eventually the careful use of a machinist's scribe is proving the most successful. Progress so far: Most of the blue stuff, which is some sort of rust, is gone
  15. bushtech

    Grundig YB500 World receiver fixup and panelbeat

    While I wait for my halogen light parts to arrive I decided to give this bad boy a go. It spent most of it's life down at the coast so the rust monster has started invading. It still works so I want to stop further damage and give it a freshen up, volume slider scratchy etc. This is what it...
  16. bushtech

    Power supply for little halogen light popped

    This lamp worked for upwards of ten years in our pantry with 2 other identical ones. I surmise the little fusible resistor just gave up. The combination of our electrical supply company ineptitude combined with the ferocity of thunder storms is a formidable opponent that keeps me busy trying to...
  17. bushtech

    Power supply for little halogen light popped

    Yes , when the parts arrive, will do a bit of sleuthing to see whats happening, measure the current etc.
  18. bushtech

    Power supply for little halogen light popped

    Ah, we'll see. Need some practice with making the smoke escape:D
  19. bushtech

    Power supply for little halogen light popped

    Thanks @Tha fios agaibh Have ordered some 1.5Ω 1/4W resistors and 0.15A fast blow fuses. Will install in seriies. Due to space constraint the fuse will end up outside the little box, so judicious application of heatshrink will be applied so that state of fuse can be seen
  20. bushtech

    Power supply for little halogen light popped

    Now I'm confused.
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