Forum Topic

Ask Sir Tony - an Electronics/Electrical Q & A thread

  • Find a different 12v power adapter with higher ampere rating, then splice the connector from the original one. If you can't find any, you may need to use an ATX power supply.
  • Find a different 12v power adapter with higher ampere rating, then splice the connector from the original one. If you can't find any, you may need to use an ATX power supply.


    sir
    do you have any idea where I can find a higher amp AC adapter, I have found 12v6a only, or maybe some electrician that can repair the adapter?
    tia po
  • Something like this could work: <click here for link>
  • @awakeruze

    Sir thank you for the link, i will try contacting them maybe they can also convert
    thanks po
  • good day mga sir
    puwede po ba ma repair ang ac adapter ng orico 5 bay enclosure ? wala kasi siyang screw, at walang ilaw pag saksak sa outlet
    wala din mabilihan, 12v6.5a siya na 4 pin pa
    Salamat po


    12V DC is one of the easiest voltages to get, you can find a lot of power supplies being sold online which only differ in current rating (amperes). You can get a power supply that has the same rating as the dead adapter (6.5 amperes) or HIGHER. The 12V adapter of my Probox 4-bay enclosure died years ago and what I did was to just tap 12V from the computer's power supply so I wouldn't need to buy a new power adapter:










    Regardless of what source of 12V DC you get, you need to salvage the power cable from the dead adapter and wire it correctly to the 12V supply. If you do this incorrectly, you might destroy your Orico enclosure (unless it has reverse polarity protection built into the enclosure's circuitry). The wiring diagram should be detailed on a sticker placed on the adapter itself.

    -- edited by Peorth on Aug 29 2020, 05:21 PM
  • Regardless of what source of 12V DC you get, you need to salvage the power cable from the dead adapter and wire it correctly to the 12V supply. If you do this incorrectly, you might destroy your Orico enclosure (unless it has reverse polarity protection built into the enclosure's circuitry). The wiring diagram should be detailed on a sticker placed on the adapter itself.


    Sir Peorth
    thank you for the reply,
    can you refer me to an electronics guy that can perform the work you mentioned?
    I am in QC
  • I don't know anyone I can recommend personally since I do my own DIY electrical work. You just need someone with some experience in electronics, and if you buy a power supply unit like what awakeruze posted earlier (with binding posts for wires) you won't even need to do soldering, just plugging in the correct wires.

    If you can take a picture of the power adapter's sticker with the wiring diagram and the appearance of the connector that plugs into the Orico external HDD I can assess how difficult or easy the job is. If it's simple you can even do the job yourself, as long as you have a continuity tester. That's just a fancy way of saying something to test if a circuit is complete, which can just be a battery, wires, and a light bulb or LED light.
  • Hello mga sir.

    Tanong lang, nagpakabit po kami ng mga ilaw sa ceiling sa bahay (led lights: recessed downlight, bulbs, etc) tapos napansin namin na kahit naka-off yung light switch ng eemit ng dim light yung mga ilaw (parang glow in the dark) pero noong triny namin na i-off yung switch sa fuse box, hindi na nag-eemit ng light yung mga ilaw (bale completely off na talaga). Is this normal?
  • Maraming dahilan kung bakit may glow ang LED lights, pwede mo basahin to:

    Why Do My LED Lights Glow when Switched Off?
    <click here for link>

    How To Stop LED Lights from Glowing When Off?
    <click here for link>

    Kung persistent siya, meaning may glow parin kahit ilan oras nang naka off hindi yan dahil sa stored energy sa circuitry ng LED bulb. Baka may wiring na malapit sa wiring ng lights at nagi-induce ng small voltage dun sa wiring ng light kaya umiilaw parin ang LED.

  • Maraming dahilan kung bakit may glow ang LED lights, pwede mo basahin to:

    Why Do My LED Lights Glow when Switched Off?
    <click here for link>

    How To Stop LED Lights from Glowing When Off?
    <click here for link>

    Kung persistent siya, meaning may glow parin kahit ilan oras nang naka off hindi yan dahil sa stored energy sa circuitry ng LED bulb. Baka may wiring na malapit sa wiring ng lights at nagi-induce ng small voltage dun sa wiring ng light kaya umiilaw parin ang LED.


    Thank you po sa advice!
  • sir,

    ung TV ng tatay ko isang maliit na puting dot sa gitna na lang. Ano ang sira ng TV? Magkano magagastos?

    Salamat sa sasagot
  • Mga sir yung UPS(APC) ko nag ccause ng power problem sa bahay. Pag naka on sya, kadalasan nawawala kuryente sa ibang outlet like namamatay efan or mamatay ilaw. Tapos tumutunog sya na para bagang naka dc sya pero hindi naman. Hindi naman namamatay yung computer na naka connect sa kanya pero ayun nga namamatay naman ibang appliances sa bahay parang nag ffluctuate kuryente. Mag 3 yrs na rin sya sa akin. Ano kayang issue nito? TIA!

    -- edited by hex on Sep 09 2020, 10:19 AM
  • sir,
    ung TV ng tatay ko isang maliit na puting dot sa gitna na lang. Ano ang sira ng TV? Magkano magagastos?


    Assuming na LCD TV yan (kasi wala nang gumagawa ng CRT TVs) kung isang white dot lang yan baka stuck pixel, na nangyayari rin sa LCD displays ng PC. Mas mabuti na white ang kulay ng pixel kasi pag black baka dead pixel na yan. Since essentially pareho lang naman ang display technologies ng LCD TVs and PC monitors, pwede mo rin subukan mga troubleshooting procedures for stuck or dead pixels for PCs. Basahin mo na lang to:

    <click here for link>

    Dikit mo yung TV sa laptop or PC para ma-run mo yung programs na nasa guide.

    -- edited by Peorth on Sep 09 2020, 01:19 PM
  • Sir Peorth,
    yung LCD TV ko naman nagkaroon ng backlight, naipit siguro nung nag lipat-bahay. Dati tatlo, ngayon lima. Para tuloy nagkaroon ng buwan lagi sa pinapanood.
  • Mga sir yung UPS(APC) ko nag ccause ng power problem sa bahay. Pag naka on sya, kadalasan nawawala kuryente sa ibang outlet like namamatay efan or mamatay ilaw. Tapos tumutunog sya na para bagang naka dc sya pero hindi naman. Hindi naman namamatay yung computer na naka connect sa kanya pero ayun nga namamatay naman ibang appliances sa bahay parang nag ffluctuate kuryente. Mag 3 yrs na rin sya sa akin. Ano kayang issue nito? TIA!


    Kailangan mo ipa-assess yung UPS mo sa APC mismo, baka may sira na siya.

    Note na ang UPS ay posible maging dahilan ng problem sa other appliances or devices dahil pwede siya gumawa ng tinatawag na harmonic distortion sa AC power line, at least for transformer-based UPSes. Highly technical ito, and hindi naman common na issue unless madaming UPS nakaplug sabay sabay. Most likely defective na talaga ang UPS so that gumagawa siya ng some sort of distortion or voltage fluctuation sa AC lines kung saan siya naka-plug. Maybe magkakaroon ka ng idea kung may multimeter ka tapos check mo voltage readings sa AC sockets. In any case wag mo nang gamitin ang UPS until mapatignan dahil baka maperwisyo ang other appliances/devices at sasakit lang ulo mo.
  • Sir Peorth,
    yung LCD TV ko naman nagkaroon ng backlight, naipit siguro nung nag lipat-bahay. Dati tatlo, ngayon lima. Para tuloy nagkaroon ng buwan lagi sa pinapanood.


    Backlight bleeding ba? Most likely habang linilipat yung LCD TV napwersa at nadistort yung display. Dahil dun nagle-leak ang light from the backlight. May konting suggestions sa ganyan, yung iba linuluwagan ng konti ang screws sa likod ng display (in case masyado pala mahigpit at nadi-distort ang display) or even disassembly at paglagay ng electrical tape sa edges. For example, eto recommendation from website:

    How To Fix Backlight Bleed On A Monitor or TV
    <click here for link>

    Before starting, it goes without saying that the TV should be turned off first and allowed a few minutes to cool off if necessary. Now, here is what you should do:

    Slightly loosen the screws on the back of the display. Sometimes, clouding and/or flashlighting occur as a result of the panel warping due to the screws being too tight. Turning each screw half-way counter-clockwise should do the trick.
    Twist the frame slightly.
    Turn the TV on and check if the backlight bleed is gone. If it isn’t, proceed to the following step.
    Take the microfiber cloth and gently rub the areas where the bleed appears in a circular pattern. Apply only so much pressure that you can see the reflections in the screen warp slightly.

    If you’ve done all of the above and the bleed still persists, try giving the display a day to settle. If, after that time, the backlight bleeding is still there, try repeating step number four, and it should go away eventually.
  • Maraming salamat sir Peorth!
  • Sir peorth follow up question po. Hindi pala UPS issue ko kasi tinanggal ko na sya sa outlet pero nararanasan parin namin sa bahay yung kumikisap kisap kuryente sa bahay. Makailang beses namatay kuryente kanina. Tapos minsan nga kahit walang nakasaksak na appliances yung bubuksan lang namin ilaw sa sala biglang nag fflicker kuryente. Fuse type pa gamit namin dito. Yung bayaw ko tinignan main box and nilinis nya by brushing yung terminal ata tapos pinag swap nya yung 2 fuse pero ganun pa rin issue. Although intermittent sya hindi palagi nangyayari pero parang mas dumadalas na. Ang tanong, balak ko sanang palitan yung 2 fuse nito na 60amp, pede ba palitana sya ng mas mataas o no bearing yun? Salamat po.


  • Huwag mo palitan ng mas mataas, baka maging dahilan pa yan ng electrical fire. Pag ang fuse ay pinalitan ng higher current (ampere) rating, ang effect ay pinapayagan niya na dumaloy sa AC lines ang mas mataas na current. Baka ang current na yun ay lagpas sa kaya kargahin ng linya, at dahil dun masusunog ang AC line instead na ang fuse. Pwede mangyari to pag overloaded ang line, kunwari nagplug ng maraming devices sa iisang socket. Kung may choice ka between using a fuse na lower or higher ang rating, laging safer ang lower rating. Di bale masunog ang fuse, dahil designed siya masunog safely (may buhangin yan sa loob to retard fire) kesa yung electrical line.

    After mo mapalitan ang fuses at ganun parin, tawag ka ng reputable electrician para iinspect ang electrical wiring ng bahay niyo. Medyo nakakatakot ang kwento mo kasi pag nagflu-fluctuate ng power ang naiisip ko ay baka may loose connection somewhere. Ang problema kasi sa loose connections nagoo-overheat at pwede mag cause ng electrical fire.

    Ang naisip ko lang na crude way para i-test ang AC lines niyo is to unplug lahat ng devices and appliances para zero ang load sa electrical system. Then i-turn on one at a time at observe. Kung ang fluctuation ay nangyari lang kapag nagplug/nag-on ng device sa isang socket, baka ang linya dun ang may problem. Kung ang fluctuation ay nangyayari pag ginamit ang kahit anong socket/line sa bahay, baka ang problem ay mas "upstream", kunwari sa electrical lines na papasok ng bahay mula sa poste sa labas.

    Make sure na ma-assess ang problem kaagad, pag pinatagal na may voltage fluctuations baka masira ang electrical devices/appliances niyo.

    -- edited by Peorth on Sep 12 2020, 09:06 PM
  • Sir Peorth! Late ko na nabasa reply nyo pero grabe on point kayo dun sa upstream. Kasi kanina may napanuod ako sa YouTube

    https://youtu.be/H6QErjfIi-g

    So ginawa ko tumawag na ako sa hotline ng meralco and kudos to them ang bilis umaksyon! After 3 hrs dumating sub con nila and nung iniliwan palang nila yung linya papunta sa bahay namin rh may napansin na silang mali. Nung pumasok na sa bakuran namin and ayun nga may damage dun sa wire nila. Yung damage eh parang cut/splice ang pag kaintindi ko. So ang ginawa ni kuya eh pinutol nya yung linya na yun mga 1 metre ata yun then pinalitan ng bago pati yung clamp/cover sa dugtong eh pinalitan nya na din kasi pinakita nya na sa katandaan or katagalan eh sobrang lumutong na sya syempre exposed sa weather. After nun pina test sa amin lahat ng ilaw sabay sabay, appliances, ac, etc. So far since then mga 2 oras na eh wala ng kisap kisap sa ilaw or sa kuryente. Kaya ang ginawa ko eh kinabit ko agad ups ko. Hehehe

    Maraming salamat sir Peorth mabuhay kayo! Laking tulong mga inputs nyo grabe lalo na syempre sa mga ganitong sitwasyon na pedeng pag simulan ng sunog.

    -- edited by hex on Sep 12 2020, 10:41 PM

    -- edited by hex on Sep 12 2020, 10:43 PM
  • ^Glad to hear naayos na yung problem. Actually naisip ko na baka outside ng house ang problem kasi buong bahay ang affected. Pag loose kasi ang house wiring dapat localized lang sa socket(s) na sinusupplyan niya ng kuryente ang problem. Pero pag whole house dun pumapasok ang possibility na yung connection outside talaga ang problem.

    Also, many years ago, yung katabi naming bahay nagkaroon ng electrical fire at nasunog ang buong bahay, halos walang gamit na nasalba. Kaya dapat laging mag-ingat tayo sa possibility ng electrical fires. Kaya ako hindi fan ng flexible PVC conduits (yung kulay orange) para sa AC wires, especially kung dumadaan sa ceiling. Pwede kasing ngatngatin ng daga ang conduit at wires, at pag nagshort pwede masunog. Yung bahay namin yung wiring sa buong ceiling enclosed ng metal pipes at metal junction boxes, hindi lang daga-proof pero kahit uminit wire sa loob at least mako-contain ng metal pipe yung heat. Paano ko alam? Kasi inakyat ko na ceiling namin ilan beses at na-inspect yung wiring heh.
  • Balak namin bumili ng APC SMT750I UPS. Pure sine wave at nagustuhan namin form factor.

    Ang problema, 6 sockets lang siya at dikit dikit ang sockets, mukhang hindi kayang ioccupy ang outlets considering ang lalaki ng adaptors ng isasaksak naming devices sa kanya.

    Question: Pwede bang gumamit ng power strip/extension cord with the said UPS para dun nalang namin isaksak yung ibang devices na hindi kakasya sa main outlets?

    -- edited by Decidueye on Sep 15 2020, 02:34 AM
  • Yes, pwede gumamit ng extension cord from the UPS without issues. Try to plug as many adaptors/devices sa sockets ng UPS, then yung remaining adaptors plug sa extension cord na naka plug sa one socket ng UPS. Yung idea lang is to distribute the load among the sockets. Even if hindi necessary dahil hindi ganun kalaki ang power draw ng devices it's still good practice electrical-wise to distribute loads among current-carrying components ng electrical circuit.
  • ^Thanks for the fast reply as always sir
  • Good day. Pwede ba gamitan ng extension cord ang microwave(23L) at oven(18L)? Planning to buy yung omni na may individual switches (2500w,10A). Hindi ko pagsasabayin gamitin yung appliance. Thanks.
  • ^Check mo wattage ng microwave and oven. Kung hindi mo plano pagsabayin yung dalawa then kung ang wattage ng oven and microwave ay < 2,500 watts then pwede mo gamitin yung extension cord. Pero kung very near yung wattage nung microwave and/or oven sa 2,500W (for example 2,400W) better to use an extension cord na may higher power rating (watts) para may safety margin.