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  1. kellys_eye

    Testing Procedure For this Component

    That device could be supplying the am/fm section too..... What does the unit do/not do? If the DVD isn't working, in what way isn't it working? No discussion spinning? That could just be the drive motor or, if fitted, a drive belt????
  2. kellys_eye

    Protection for RFID

    A somewhat over complicated solution. Can't you put an index slot on the wheel and use it to start a counter and interrupt a 'beam' and simply count those that pass?
  3. kellys_eye

    Bajaj induction cooker 2000w - fault finding

    Given the first line of fault location requires eyes, ears and nose there's still some validity in Steve's finger-fault!
  4. kellys_eye

    Testing Procedure For this Component

    With it actually 'in position' - what did you measure as the input and what did you measure as the output? What evidence did you have to justify its removal for out-of-circuit testing?
  5. kellys_eye

    RF detector

    That's too true - and it's not 'don't require too much technical knowledge', it's ZERO technical knowledge - they do, however, insist on 'procedural knowledge' - which is all that black-box users need to know.
  6. kellys_eye

    Small low-power light sensor

    Copyright Apple Corp.....
  7. kellys_eye

    Hi, center tap transformer, how to calculate?

    Clue #1.
  8. kellys_eye

    Hi, center tap transformer, how to calculate?

    @Ratch - Take my advice - don't get involved in this...... if you value your hair.....
  9. kellys_eye

    RF detector

    I echo @hevans1944 concerns. Anyone holding a decent amateur classification license would have the requisite technical knowledge to fully understand the needs and solutions for the OP's proposal - it's 'baby stuff' as far as genuine amateur radio operators are concerned. But there are people...
  10. kellys_eye

    Technics Receiver SA-600 Repair

    Making sparks and blowing fuses whilst taking test measurements just tells me that you don't have the requisite skills to affect a repair and you're more likely to create other problems as a result of your 'poking around'. No 'measurement' (if taken properly) will cause a spark or blow a fuse -...
  11. kellys_eye

    Robotic pitch liner (white line marker)

    Forget GPS - you need centimetric resolution which can cost a LOT of money. Lasers would be good, with a 'stop' function should the beam be broken/interrupted by someone walking across it. Fairly simple to implement too. Research 'white line follower' as the basic principles of that system...
  12. kellys_eye

    Calculating thermal/heat dissipation for enclosure

    What is the total power consumption? THAT is the 'power' it is generating.....
  13. kellys_eye

    Technics Receiver SA-600 Repair

    Power supply output? What voltage do you read? If it is 'good' then you can compare voltages between channels at strategic points and note the discrepancies between the working and non-working channel.
  14. kellys_eye

    Motor Speed Sensor.

    I'm not about to decipher the track layout! but there MUST have been an error between the translation between design and final product. I don't see any trace for the GND to the 4013 or the -ve end of C1...... Oh... and sack the board designers...... damn... that's bad....
  15. kellys_eye

    DIY bluetooth speaker

    The battery depends on the power consumption and how long you want it to run for. So: 1. Can you measure the total power consumption when in 'normal use'? Or at least give us details the modules (Bluetooth and amplifier(s)) being used? 2. Tell us how long you want it to run for?
  16. kellys_eye

    Motor Speed Sensor.

    excellent not so much... Clearly this is a 'construction' issue, not an electronic one. Double check your layout and construction techniques.
  17. kellys_eye

    Yamaha psr s710 - No Sound no led lights from buttons.

    Check all the supply rails. Report on any missing or incorrect voltages.
  18. kellys_eye

    DVR power supply testing

    You can hit the 'edit' button on your post (up until another post is added to the thread - and your own post 'locked' that ability....) and delete/modify the content of your post. Yeah... pictures don't actually help much. You'd have to dismantle the PSU a bit more and spread the innards about...
  19. kellys_eye

    Technics Receiver SA-600 Repair

    Do you have ONE channel working? Have you checked the fuses and the output of the power supply?
  20. kellys_eye

    Hi, center tap transformer, how to calculate?

    What is 'n'?
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