Search results

Search Forums New Posts
  1. kellys_eye

    Kenwood x45 no power

    Check the voltages at Q1, specifically the collector and emitter. Then the emitter of Q2 Emitter Q1 should be around 19V and collector 12V. Emitter Q2 should be 15V. Most importantly, the emitter of Q4 should be around 5V - if it is higher (say more than 6V) then the main processor is fried.
  2. kellys_eye

    Kenwood x45 no power

    Did you actually re-solder the resistor mentioned in earlier posts? Pop over to hifiengine ( https://www.hifiengine.com/manual_library/kenwood/x-45.shtml ) and download the manual (it's free but you have to register). Load it to this site and we'll take it from there.
  3. kellys_eye

    wollensak pressure roller assembly 81-01862910-5

    Have you tried any 'antique' forums? They exist to offer help and advice to people who own old radio, tv, hifi, audio etc equipment and many members have incredible resources at hand. Here in the UK I visit https://www.vintage-radio.net/forum/index.php for such assistance. Similar sites...
  4. kellys_eye

    Simple power struggle...

    Unless you want to turn your heating system into a useless pile of junk I suggest you get a professional to look at it.
  5. kellys_eye

    Samsung Q600B/ZA-no sound,buy schematic diagram

    I've just had a dump.... Still waiting on internal pics though. Don't you read the replies?
  6. kellys_eye

    Simple power struggle...

    Yup, a bigger 'fuse' will solve the problem......... NOT.
  7. kellys_eye

    MP3-TF-16P player connected with relay

    Personally I can't be bothered to decipher the 'description' of how it's connected. If you draw an actual schematic of your arrangement it would be far easier to understand.
  8. kellys_eye

    Simple Gate driver circuit help needed

    What is it that you're trying to achieve? Got a schematic or an accurate description of the set up? Nothing you've said seems to make sense i.e. we need to know what it is you're doing in order to give advice.
  9. kellys_eye

    LED Strips connection Math for Power source

    Look into the Tesla Powerwall. 13.5kW - should power the LEDs for around 2 months none stop......
  10. kellys_eye

    Simple Gate driver circuit help needed

    To drive what?
  11. kellys_eye

    Simple Gate driver circuit help needed

    Show a schematic. Guessing - it's a pair of FETs (maybe even a bridge).
  12. kellys_eye

    LED Strips connection Math for Power source

    Total length (14ft) is very little more than the whole strip at 2m. What does the package say about battery life? Whatever it says the batteries will last around 5% LESS - probably not noticeable by the user. Will depend on the TYPE of battery used. CR2032 about 2 minutes /s...... AA's a lot...
  13. kellys_eye

    How to work Buck Battery Charger Controller IC BQ24610RGER

    The second quoted part doesn't seem to match the first quoted part...... if you designed it surely you know how and why? Another question. Does it really work? Have you built it? Have you studied the BQ24610 datasheet?
  14. kellys_eye

    home made fabrication for resistor,capacitor,diode (RCD) circuits

    Ooooo...kaaayyyyy.... Resistors currently cost me a penny a piece (less if bought in quantity). How much does it cost to 'make' one? (given that my time is currently valued at $150/hour). Open question.... anyone still not convinced the OP is trolling us yet?
  15. kellys_eye

    capacitor amplifier. (its got diodes)

    As far as the OP is concerned you need to add a 'contrail' smilie to your post..... it's so far over his head!
  16. kellys_eye

    how to short through caps

    Into the woo woo section in 3.....2......
  17. kellys_eye

    Soldering and replacing SMD LEDS

    No, IPA is no threat to components and should evaporate quite quickly after application anyway. I use a cotton bud stick to apply/wipe the stuff on.
  18. kellys_eye

    Soldering and replacing SMD LEDS

    If you use solder and/or flux when replacing the LEDs (you should) then it will have a flux core (presumably, some use liquid flux too) otherwise the stuff you're seeing is possibly 'glue' that they use to stick the LEDs to the board before they solder-reflow (or IR heat) the board to fix/solder...
  19. kellys_eye

    Soldering and replacing SMD LEDS

    Residue? Do you mean solder FLUX perhaps? This is usually easily removed using IPA (isopropylalcohol). It's corrosive by nature so should be removed.
  20. kellys_eye

    Kenwood x45 no power

    The power supply for that unit seems to be 'off board' (probably via the thicker grey ribbon cable at the top left of one of your pics) and that's the first place to check for faults. Post a pic of the PSU section and include any voltage measurements you can make.
Top