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  1. kellys_eye

    LCD monitor power problem

    Yes to both capacitor replacement values. Testing is done using an ESR meter - originally rarely used but now incorporated as 'standard' in many of the multi-test devices you can get on eBay these days...
  2. kellys_eye

    I need a equivalent of an integrated circuit.

    any more information? WHAT test device? Make? Manufacturer? Model? The more information we get the more capable we are of supplying an answer.
  3. kellys_eye

    Digital display

    The best you could manage would be to add different displays for each of the sensor readings - fabricating an LCD is no simple (or cheap) task. Can you post a picture of the display and the connection to it? If the electric/electronics follow industry standards it may even be OSB2 or CANBus in...
  4. kellys_eye

    Distant Relay Module Circuit Help

    Faster response? Faster than the speed of light? If there are any delays it will be as a result of your programming/controller, not the distance between switched units. The relay schematic is wrong - use some ready-made relay modules designed for use on digital outputs. They can be purchased...
  5. kellys_eye

    I need a equivalent of an integrated circuit.

    Do you have the datasheet for the original device? That looks like an in-house numerical designation, I certainly can't find any reference to it.
  6. kellys_eye

    HP DeskJet 5550 suddenly gone into Very Slow Printing Mode

    Run system monitor (alt-ctrl-del and choose it from the listed options). Check to see which processes are running and see if there is anything 'hogging' the CPU. It should be easy enough to spot the process that controls the printing too. Report back with your findings.
  7. kellys_eye

    4 wires touch screen

    Given the density of screen contact points and the 'fatness' of a typical finger you can't avoid but hit any number of cells and get a 'selection' of results. You need to do an average and (potentially) introduce a delay to fix a value for a specified period of time - this is akin to the delay...
  8. kellys_eye

    Tascam DA-30 DAT won't play

    Check the capstan and pinch roller - sounds like you've got something wrapped around one of them.
  9. kellys_eye

    Flexible Shaft

    If you can suffer the noise, use two micro-switches operating off cams attached to the collars of the shaft connectors. In the event of electrical failure you would still 'feel' the point of maximum torque as the clicks occurred.
  10. kellys_eye

    USB chargeable flashlight

    Depends on what he's using as the charging voltage really. Since a USB port can only deliver 5V then if he included two cells that were wired in series and added up to greater than 5V then you'd have to include some form of boost converter to get the correct charging voltage. There are many...
  11. kellys_eye

    4 wires touch screen

    The pins appear to be connected in pairs so there appears no discernible reason why connecting them will make any difference electrically speaking. Maybe your code c(sh)ould include a form of 'contact bounce' delay to reduce or stop the 'noise' (which I'm presuming is a fluctuation in the...
  12. kellys_eye

    Solar astronomy taken to a new level for me

    Despite owing and using a variety of telescope types I now find myself enjoying lying out on the decking with binoculars and, with #1 eyeball finding, just observe what I can, when I can. Meteor showers are a good nights viewing and just scanning the MW is enjoyable. Actual telescope use is...
  13. kellys_eye

    Electronic Drum

    Some how, with a user name like that, I dn't think you'll ever be back other than to check on the replies. However, yes and no are the two answers.
  14. kellys_eye

    Multi turn potentiometer insted of regular

    Yes, replacing them potentiometers is a good move and will give the precision you require.
  15. kellys_eye

    Aiwa NSX 999 Mk2 music system, Microcontroller, does it need programming?

    Sounds like the keypad multiplexing is playing up but this could be because of poor, loose or dirty connections on any of the component parts of the keys, interconnecting leads, plugs, sockets etc. Have you tried any other repair methods?
  16. kellys_eye

    PSU connector replacement

    Still none the wiser I'm afraid. We need to know what signal (voltage) is one what wire and which wires require them! Schematics of the power unit and the mixing desk would help, as would make/model numbers of both units.
  17. kellys_eye

    Jumpstarting unit PS1100 may be incapable of charging?

    Pictures?
  18. kellys_eye

    Xmas light string controller

    The rectifiers provide the DC for the COB device (Chip On Board) - that's the black blob on the stand-up PCB. IIRC the AC feeds the rectifiers then the unsmoothed (fullwave rectified DC) is fed across the board and to the three thyristors - check the device markings as I'm almost 100% sure they...
  19. kellys_eye

    Newbie needs help identifying correct capacitor replacement

    Leave the black gunge - it's a PITA to remove and doesn't do any harm. The capacitors look domed to me and is a typical fault symptom but the suggestion to measure at the capacitors was meant to be with the power on! The 'hours' spec on the capacitors is a figure I find difficult to believe -...
  20. kellys_eye

    Voltage Amplifier

    Can you post a link to the piezo device?
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