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  1. K

    Regular power in fries it, SPI power in sails it

    I don't get it... I have triple checked now. Also, measured the current drawn when fed through the 3.3V programmer interface: - a PCB with the RF chip in place max 8.3 mA DC seen. - a PCB* without the RF chip max 7.6 mA DC seen. *This one has a different MCU - ATmega168PA instead of...
  2. K

    Regular power in fries it, SPI power in sails it

    Will do! I have taken out the RF chip - this is the one getting shorted. Board now does not short any longer. Checked the specs again - RF chip max voltage: 3.6V - voltage regulator max V_out: 3.465V *edit* done the measurement on the PCB that I have taken the RF chip out. I have managed to...
  3. K

    Regular power in fries it, SPI power in sails it

    I believe either the MCU or the RF transmitter. I currently can not take those apart with my toolset. I lack such a piece of equipment. If it helps, the cigarette socket can charge various phones OK. I did use the multimeter on it and found nothing wrong. Now maybe just when I have plugged...
  4. K

    Regular power in fries it, SPI power in sails it

    Made my first PCB, yay! a MCU and a RF transmitter mainly. Programmed it OK through the SPI interface (which has a power pin feeding it stable 3.3V). All worked fine. The circuit is intended to run off its currents at 12V obtained from a car lighter socket. So I have soldered the car plug...
  5. K

    TV set - I have broken it

    Well, visual inspection revealed nothing wrong, and the problem only manifests itself if that HDMI extension cord is used. I don't think I should bother anymore about it. thanks anyway.
  6. K

    TV set - I have broken it

    Or.. not so fake. Of the two HDMI ports one behaves as described. The other one presents similar symptoms but on a much lower scale - almost none. I am guessing I should look at the HDMI connectors.
  7. K

    TV set - I have broken it

    Ah, false alarm, sorry. It was just a loose HDMI connection due to the HDMI extension cord. Thank you both.
  8. K

    TV set - I have broken it

    I have unscrewed its back cover, done my work with it (TV working ok), then placed the cover and screwed it back in again; there was some rocking involved in the process. TV working not OK any longer. Aside for what can be seen in the video it also goes black for brief periods. And this is not...
  9. K

    graphics card VRAM replace

    eagle eyes! replaced them, worked a treat! thanks.
  10. K

    graphics card VRAM replace

    Uhm, should I ? with al those electrolytic capacitors and who knows what other pieces of plastic that might not withstand this ? Anyway, how do I make it 180 deg in an old oven ? thanks
  11. K

    graphics card VRAM replace

    damn.. all right, thanks !
  12. K

    jittery mouse fix

    you have made me pul out the magnifying glass... no scratches, just weird geometry. Cleansed again and all is well. Thanks!
  13. K

    graphics card VRAM replace

    Hello, One (ore more) of my graphics card's VRAM has gone bad. Took out the card to only baffle on the VRAM chips being ... unreplaceable ? The VRAM seem to be facing up on both sides of the video card. I can't see their pins... Help!
  14. K

    jittery mouse fix

    Hi, I have this Genius Navigator 535 mouse that jitters as I move it. The higher the DPI the more the jitter. Rubbed its lens clean, used it on two machines and 5 OSes, even with custom made drivers for it. all the same - so I am pretty sure this is a hardware issue. That being said, I have...
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