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  1. mikey5791

    Help diagnosing AC Sliding gate controller stops halfway

    Steve, The limit switch green led will illuminate during the gate opening, but if the gate is closing then the red led will illuminate until it is fully close. When the gate is fully closed, the red led will auto switch off. In my case, during closing gate halfway(while the red led illuminate)...
  2. mikey5791

    Help diagnosing AC Sliding gate controller stops halfway

    When the gate is closing, the "limit switch" LED (the red color) is on.
  3. mikey5791

    Help diagnosing AC Sliding gate controller stops halfway

    Hi Martin, The gate stop almost at the same position and i checked the wheel bearings which runs freely without any resistance in both directions. The wheel does not jam against rail or anything of resistance. After i lift off the gate, i checked for wheel alignment by moving the wheel for...
  4. mikey5791

    Help diagnosing AC Sliding gate controller stops halfway

    Hi forum friends, This is my home AC sliding gate controller which has been working faithfully since year 2012. Few days back, when i press the button on the remote control to open, the gate opens full length with no problem but when i press the button again for closing, the gate stops at...
  5. mikey5791

    Acer AL1717F blue led light does not turn on

    Hi all, I have this Acer AL1717 F working lcd monitor, but yesterday the blue led light on the front switch does not turn on and thus no display on screen. Upon opening the outer casing, and looking at overall board (image 112637), i do not see any burned parts or bulge caps. Fuse T2A measured...
  6. mikey5791

    Acer v203HV turns pink then white display

    Hi, This Acer v203HV lcd monitor has been working normal for more than 5 years until yesterday. When i switched on, the normal Acer logo appears but after less than 1 minute, the display turns pink hue( image 090232),shortly it becomes white (image 090246). So i opened up the monitor case...
  7. mikey5791

    Need help diy a power bank

    Hi Harald, Thanks for reply. I will look for a bigger case to fit in the battery pack before i attempt this project. Thanks for the advice.
  8. mikey5791

    Need help diy a power bank

    Hi friends, Got this simple power bank of 8800mAh capacity but the inside battery seems to be failing. It is not taking any more useful charge. The dmm measured the battery reading about 0.17vdc. The input is rated at 5v 2.0A. I was thinking about replacing the failed battery with some extra...
  9. mikey5791

    Need help on Dell S2330MXC lcd monitor white display

    Hi, Pulled this monitor from storage and tried switched on power but i only got white display. Not sure whether this monitor worked in the past. I searched for schematic or service manual for the monitor and board model 715G4924-M01-000-0H4F but there is no info whatsoever. Checked the fuse F701...
  10. mikey5791

    Help on Dell 2007fpb led conversion

    Sir 73's de Edd, Appreciate your reply. It is strange that no one else respond to my post maybe because this is such a "pain in the ass" model. Replying to your last question, the led does not seem to have any dispersing lens. They are just the square yellow type and there are 42 leds on each...
  11. mikey5791

    Help on Dell 2007fpb led conversion

    Hi forum friends, Got this working monitor from a friend free yesterday but all the ccfl bulbs seems to be dead. So i am planning to convert those ccfl to led. The pcb consists of 3 separate boards from my image img 090901. My led conversion kit requires me to look for enable on off pin and DIM...
  12. mikey5791

    Help diagnose Sonic Gear 2.1 computer speaker woofer no bass

    Reference on tda 2030 datasheet and schematic example but i have to confess that i do not understand fully. Hope it helps in our further diagnosing. Appreciate your guidance.
  13. mikey5791

    Help diagnose Sonic Gear 2.1 computer speaker woofer no bass

    Hi Harald Kapp, Done the tda 2030 replacement but i still do not get sound from bass speaker. Referring to your quote, "Check for an AC input signal on pin 1 of the TDA2030 to ensure the signal reaches the input." maybe i done it wrong. Is it correct to put the dmm red positive on pin 1 tda...
  14. mikey5791

    Help diagnose Sonic Gear 2.1 computer speaker woofer no bass

    Harald Kapp, Thanks for reply. As per your guide, with external audio input mp3 and main power on, dmm set to ac 2v scale, probe on pin 1 of tda2030 (the one near to c23) produces some buzzing noise where i also can hear light audio input. I will replace this defect tda unit. I had performed...
  15. mikey5791

    Help diagnose Sonic Gear 2.1 computer speaker woofer no bass

    Hi forum friends, Anyone can help with the no bass signal? I can't find any schematic for this unit. Just an update. I used the center tap black wire of transformer as circuit ground. Using my dmm on dc scale, i checked all the 3 tda2030, positive probe to pin 5 vcc gives reading 15.7vdc. While...
  16. mikey5791

    Help diagnose Sonic Gear 2.1 computer speaker woofer no bass

    Hi forum friends, Yesterday when i switched on my pc to play some mp3 on this speaker, i noticed the music is coming from two side speakers but the bass(woofer) speaker no sound. Normally the bass will pump out some vibration. I fed dc3v to woofer speaker red and black wire at sp near cap c23...
  17. mikey5791

    Help diagnose LTQ70 soldering iron no heat

    Hi, Thanks for reply. I am ordering a new set of temperature adjustable soldering iron soon. Hope it will be useful for many tasks ahead.
  18. mikey5791

    Help diagnose LTQ70 soldering iron no heat

    Hi forum friends, Once again i come to this forum for assistance. In the past, i have been getting a generous amount of help in repairing and appreciate it so much. This morning i found out this soldering iron no more producing any heat, but the neon light is on. I pressed the button to heat up...
  19. mikey5791

    Help diagnose Vinnfier sub woofer no power on

    Hi 73's de Edd, Indeed Sir you have a sharp eye for detail. From your comment, i did a reflow on the three terminal voltage regulator ,and voila the sub woofer power led came back on ! (Noticed my solder work was not that great as in the attached picture) The great thing is It is now working...
  20. mikey5791

    Help diagnose Vinnfier sub woofer no power on

    More pictures on switch of volume,treble, bass,usb, sd connector top and bottom side. Hope all this helps.
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