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  1. kellys_eye

    Thermal fuse on printed circuit board

    Kinda think there's some exaggeration in the specs..... either way, the 'fuse' you're referring to certainly isn't rated at anything over 30A as the WIRE it's connected to seems to be 14awg (?) therefore 30A is the 'recommended limit. The only reasonable fuse holder would be what's called a...
  2. kellys_eye

    Repairing GEM novoPiano DP-25

    That's generous of you. More people should upload such manuals to bring these 'bandits' under control.....
  3. kellys_eye

    Uniden Atlantis 250 Handheld 2-way VHF radio --- Does not receive / no audio for incoming

    Try adjusting the squelch control. The operators manual should tell you how to use it. https://uniden.com/products/atlantis-250-handheld-two-way-vhf-marine-radio Where are you? What are you listening to? Sure there are actual signals being transmitted in your area? They don't transmit all...
  4. kellys_eye

    Never seen this

    Gone bust? Sold out? Who knows....?
  5. kellys_eye

    Thermistor sensor

    You will have to do some testing yourself to establish the thermistor value at specific temperature points. The manufacturers datasheet may give all you need to know - have you checked it out? <edit> the datasheets DO show all the values at the stated temperatures. All datasheets available at...
  6. kellys_eye

    Need help with a Sony sony icf-sw7600 AM not working

    Signal injector and diode probe (home made if you have to - only three or four components!) is all you need - plus the schematic of course. You can even use a home made signal injector; basic squarewave oscillator, lots of harmonics. I taught fault finding on marine radio equipment for years...
  7. kellys_eye

    Never seen this

    Potentially a remote receiver intended to make the socket into a remote controlled outlet. I can't see any microphone so it's not a 'bug' but the inclusion of a DIP switch means there may be any number of them fitted, each with different DIP switch settings. It's also potted in an epoxy resin...
  8. kellys_eye

    Need help with a Sony sony icf-sw7600 AM not working

    What test equipment do you possess?
  9. kellys_eye

    Thermal fuse on printed circuit board

    As per Edd above - you could fit a standard fuse of the appropriate rating and, potentially, a proper holder for the fuse too (allows easy replacement). Tell us more about its purpose, the equipment etc. Looks to be around 20A or 25A to me.
  10. kellys_eye

    Clavinova FX conversion

    You can input audio signals at the volume control via a simple mixer (which could be as simple as a resistor/capacitor). Please post some pictures of the machine and its innards.
  11. kellys_eye

    Thermal fuse on printed circuit board

    Show the other side of the board please.
  12. kellys_eye

    I need help in identifying this part

    That's got to be one of the dumbest purchasing decisions I've ever come across..... (1) they are incredibly hard to work on (2) parts are potentially more expensive to locate/purchase/have delivered than buying a new board (3) a new one isn't that expensive in the first place. The full...
  13. kellys_eye

    Microwave Inverter PCB (F6645BA01GP) - Shorted Bridge Rectifier

    Apart from potential self-failure the usual cause is the driver IC going dud which sometimes drives the device into permanent conduction and then failure. As I stated previously.....
  14. kellys_eye

    Need help troubleshooting a pure sine wave battery backup inverter system

    You could 'play' with the programming controls so long as you don't 'accept' any parameters i.e. just scroll through the various options to see what's on offer. You'll probably come across 'battery type' as one option and see that you can chose lead-acid, lithium etc. No harm done if you're...
  15. kellys_eye

    Daisychaining powerbanks observations

    You can 'daisy chain' in series (not a good idea) or parallel (equally bad) or you can use a larger bank equivalent in capacity to the others you would be using. Or, you could use the proper power converter and power the dashcam from the vehicle directly - as it is intended.
  16. kellys_eye

    Parts for projects

    Where are you located? Can't advise on suppliers without knowing your country but the likes of Farnell, RS Components, Mouser etc all have outlets worldwide. I've never had issues with IC sockets obtained from anywhere - even the 'cheap Chinese' stuff. They tend to 'feel' tight if you don't...
  17. kellys_eye

    repair Tribest Sedona SD-P9000 dehydrator -- low DC voltage from power board: maybe rectifiers or caps?

    Volt-drop implies resistance and diodes don't have a (pre) failure mode as such. We can only assume that the soldering wasn't up to scratch and that there was a dry joint somewhere. Physical movement seems to have corrected the issue but it will re-occur unless the soldered joints are properly...
  18. kellys_eye

    Need help troubleshooting a pure sine wave battery backup inverter system

    Not sure about the country you're in but here in the UK (and, I suspect, many other countries too) you have to have a professional and certified solar installation to feed back into the local/national grid (a grid-tied setup). This imposes additional costs that may not be recovered in any short...
  19. kellys_eye

    Need help troubleshooting a pure sine wave battery backup inverter system

    Measure the individual battery voltages and compare with the manufacturers spec for 'fully charged'. If they'd don't get there then they are definitely dud and no amount of 're-calibration' or distilled water is going to fix them. What batteries you change to depends on what type your...
  20. kellys_eye

    Missing capacitor for bench grinder

    25uF would be about right. Something like this...
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