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Recent content by onedog

  1. onedog

    Seeking help with 12v dc motor controller on golf buggy

    Hi guys. I have removed the two obviously bad parts (RL1 and Q3). I have also removed the two components that look like mosfets - thanks to EDD for the removal tips. I hope to be able to test these before trying to re-assemble the beast but I'm having trouble identifying them. The markings are...
  2. onedog

    Seeking help with 12v dc motor controller on golf buggy

    I sure would, and thanks for the offer. Please excuse the time delays between my posts. Apart from normal living, every time I come across something new I side-track and try to learn - and there's one helluva lot of "something new" for this old dog. For example,: How do you guys know what Q1...
  3. onedog

    Seeking help with 12v dc motor controller on golf buggy

    I guess I was thinking more about soldering the replacement part.
  4. onedog

    Seeking help with 12v dc motor controller on golf buggy

    I will probably practice first but the relay's pins mostly have a little bit of space around them so maybe not too hard. The tough one might be replacing Q3 where the pins are very close together.
  5. onedog

    Seeking help with 12v dc motor controller on golf buggy

    I saw that but the pin positions are different. The relay I'm trying to replace claims to have an "industry standard footprint" so I thought I'd be able to find the same footprint from a different manufacturer - maybe not so? So how would I fit the suggested relay to my PCB?
  6. onedog

    Seeking help with 12v dc motor controller on golf buggy

    The only Google info I can find on the blown relay points to Anglia in the UK and I have emailed them. Is there any other way to find an alternate suitable relay with the same footprint?
  7. onedog

    Seeking help with 12v dc motor controller on golf buggy

    Earlier, I said that the resistance of the coil in the relay was 320Ω as per spec. Big Newbie mistake - the resistance was 320KΩ, i.e. 1000 x spec. Alec_t... Great spotting on transistor Q3 - see new pic. So re the relay, any pointer on where I go to find a replacement with the same pin layout...
  8. onedog

    Seeking help with 12v dc motor controller on golf buggy

    Hola Sir Edd I have yet to check the relay as you suggested. I'll try to do it this morning. Both Q1 and Q2 show 5 ohms C to E. I can't get further info on D1, Q1 or Q2 without de-soldering and I don't think I've got the skill set for that.
  9. onedog

    Seeking help with 12v dc motor controller on golf buggy

    Mr Edd 1. While I can see that the blob atop the relay is probably epoxy, I include here another snap showing a bubble on the relay case directly above pin 5 (as numbered by me in the pdf above). 2. You are so right. D1,Q1 and Q2 tabs are thermally connected through some sort of material to a...
  10. onedog

    Seeking help with 12v dc motor controller on golf buggy

    Sorry about the missing pdf. Here it is. I have annotated the graphic (page 3 RHS) by adding pin numbers. I was not familiar with hall effect sensor but I'm learning - thank you.
  11. onedog

    Seeking help with 12v dc motor controller on golf buggy

    Hi all. I'm new at this and considering repair of a motorised walk-behind straight-ahead (i.e. no reverse, no direction control) golf buggy. Manufacturer was Boska (defunct), power is 12v 28Ah deep cycle battery. The buggy was assembled in the car park and behaved itself until 100M down the...
  12. onedog

    Sony HT amplifier/receiver repair

    Possibly a dumb question but we have a 240v system here and, through green power, a scarcity of incandescent globes. My choices appear to be Compact Fluorescents, Halogens or LEDs. Do you guys have any further advice on what will work instead of the 75W 115V incandescent suggested?
  13. onedog

    File attachments

    Thanks, Ian.
  14. onedog

    File attachments

    Hi moderators Could you consider allowing csv files as attachments (useful for simple tabular data). These are readable by almost any spreadsheet program, especially free readers.
  15. onedog

    Sony HT amplifier/receiver repair

    Hi elebish I'm out of action for a couple of weeks but will make use of your tip when I'm back. Thanks a lot.
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