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  1. kellys_eye

    still suffering with a bridge rectifier overheating

    96VA refers to the 'wattage' - your transformer (24VAC) has a maximum current of 4A. If you are still using the 1N4007 diode note that it rated for 1A maximum. You need to use rectifiers that have at least 5A capacity (better still, use an 8A or 10A diode). Normally, such individual diodes...
  2. kellys_eye

    Generator/Inverter repair

    Show us a clear/detailed picture of your unit.
  3. kellys_eye

    Who Here is into Arduino & Raspberry Pi. Are You Also Serious About Electronics?

    That in itself poses a problem. Unless you can find people in your own social circle that you could advise of your part time repair facility then you will otherwise have to go 'public' and let the wider public know - this exposes you to working to a timescale as anyone offering kit for repair...
  4. kellys_eye

    The observer effect

    If a tree falls in the forest...........
  5. kellys_eye

    Who's right and who's wrong?

    Isn't that current limiting??
  6. kellys_eye

    Design of multistage audio amplifier

    Start by deciding which class of amplification you intend to use and the supply to be used.
  7. kellys_eye

    Who's right and who's wrong?

    Without looking up a standard response...... I would take Battery MANAGEMENT System to mean anything between simple monitoring to full protection and control depending on how that system is offered up. I wouldn't expect BMS to mean a specific means of control. Consider either approach - per...
  8. kellys_eye

    Who Here is into Arduino & Raspberry Pi. Are You Also Serious About Electronics?

    You seem to have posted on multiple occasions in an effort to get someone to hand you an idea that will help make some money. You are not going to get anywhere with that approach because we know nothing about your actual skill sets, knowledge and capabilities - what we've learned in the interim...
  9. kellys_eye

    Who Here is into Arduino & Raspberry Pi. Are You Also Serious About Electronics?

    There are those that do this for a living but they are often 'known' within the industry as people you can rely on to create app-specific programs and/or interface to simple sensors to either repair an existing system that no longer has spares available OR create adaptations to existing systems...
  10. kellys_eye

    Generator/Inverter repair

    Can you post a picture of the inverter module? As with many switched-mode type circuits, capacitor faults are high on the 'problem' list and since some of them stick out above the epoxy filling you can (1) spot the faulty capacitor (bulging/cracked top) and (2) 'dig' them out and replace them...
  11. kellys_eye

    Generator/Inverter repair

    Sounds like a short circuit on the input of the inverter. If the component parts are accessible (more often they are embedded in epoxy so almost impossible to service) then check the main rectifier(s).
  12. kellys_eye

    Moto master Eliminator Power Box 800 has anew battery but won’t charge . Battery level to 5v

    See this thread: https://www.electronicspoint.com/forums/threads/motomaster-eliminator-power-box-800.276328/
  13. kellys_eye

    Faulty Electronics and Ethical Practices

    Well it's pathetic here (UK) as you can no longer take stuff FROM the recycling centre due to H&S rules....... if you're lucky and spot someone dumping something they want rid of you can ask them to 'dump' it in the rear of your own car but once it's in the recycle bin that's the end of it -...
  14. kellys_eye

    Swapping Out Boards, Repairing and the Economics Considerations Involved

    I'm of the opinion that the markets are now geared to invent 'something' then market it to people in the form of 'here's something you can't live without'. They do this irrespective of any actual need - invention just for the sake of it really. Of all the stuff we own I very much doubt we need...
  15. kellys_eye

    heathkit it-5230

    CRT 'rejuvenation' - in conjunction with a high potential on another CRT electrode (I forget which) it caused the heater to be 'stripped' of a coating that used to build up and reduce electron emissions making 'dull' colours.
  16. kellys_eye

    Swapping Out Boards, Repairing and the Economics Considerations Involved

    Time is money. When I worked at sea and then as a marine electronics engineer servicing ship equipment it cost the ship owner $30,000 a day to have the ship laid up 'doing nothing' as dud communication or navigation equipment meant it was 'illegal' to sail. As a result the fault was often...
  17. kellys_eye

    Faulty Electronics and Ethical Practices

    Indicative of the dumbing down of the population - people incapable of understanding how things work and the methods required/used to repair them. The assumption is that since 'you'(?) request to take their dud stuff off them (maybe to strip for parts?) they think you can fix it and make a...
  18. kellys_eye

    The Alesis M1 Active Mk2 Problem - capacitors dying from resistors

    The schematic has them at 47k. The 37.4K you measured was possibly as a result of them originally being fitted as 36k devices (one of the E24 range) and this fits with the discolouring if the middle band was originally blue. The original resistors are probably still ok despite their...
  19. kellys_eye

    The Alesis M1 Active Mk2 Problem - capacitors dying from resistors

    ...but the schematic of the PSU board shows......
  20. kellys_eye

    The Alesis M1 Active Mk2 Problem - capacitors dying from resistors

    Change C8 - it's DUD! The resistors are probably ok and don't need changing but if you want to.....meh. They're only there to 'balance' the voltage across the two main smoothing capacitors (C6/C7). Measure the power supply output and see if it is within spec. I reckon replacing C8 will fix...
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