KRK VXT8 / 6 missing resistors / diodes

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • maxeringade
    New Member
    • Dec 2022
    • 4
    • brazil

    #1

    KRK VXT8 / 6 missing resistors / diodes

    I bought a pair of krk VXT8 for cheap and one is untouched while the other has a "mod"...

    Both work flawlessly and both sounds good, but theres a detail that i would like to investigate a little further just to be sure nothing is wrong....

    The "modded" one is hard wired to 230 volts as show in the pics and is missing 2 resistors (R65 & R66) where jumpers are in place and 2 diodes (D10 & D11) nearby missing as well as shown....

    Some of you guys have an idea of the what role these components play in the circuit and if its safe to run the monitor like this? as said, works with no issue, and other them this the rest of the circuit is not messed.
    Attached Files

Related Topics

Collapse

  • jinu_j
    LED driver circuit. Burnt Resistors
    by jinu_j
    Hi Folks
    This has to do with a LED light driver rated for Output - DC36-65V 300mA. This is used to drive a 15W LED panel light.

    Now this does not work so opened up and found 2 resistors burnt to crisp. Sensing a learning moment, i looked around the circuit to figure out that it is built around the OB2538 chip. The circuit to a large extent follows the sample application circuit mentioned in the data sheet. I have traced the actual circuit and the same is also attached for reference.

    But i have some queries on this circuit
    1. The resistors that burnt to crisp...
    08-26-2020, 01:24 AM
  • Dvsr
    On M-Audio AV40 active studio speaker's two zener diodes get really hot.
    by Dvsr
    Hi. I need help from wiser guys. I am amateur in electronics and can't figure this out by myself.
    I bought faulty speakers, M-Audio AV40's. Other speaker has all the electronics in it and the other speaker is just passive one powered by the other speaker's amp. Original problem with the speakers was loud buzzing. I figured out that there is something wrong with the capacitors. I went ahead and replaced every electrolytic capacitor on the PCB. The caps are good quality and have the same values as the original ones.
    After replacing the caps I started testing out the speaker. It seemed...
    09-10-2025, 10:20 AM
  • edugimeno
    Help me identify the missing component... Sound to light circuit
    by edugimeno
    hI there!
    Im trying to help a friend repairing a large, real-sized short-circuit robot.
    This is remotely controlled and has a 2 way voice send/receive. Also while the hidden operator is talking, the red bulb inside the "mouth" should flash according to the sound
    Some other technician used to service it and he was fired leaving all the repairs unfinished and no documentation at all.

    What I found is a sound receiver, a speaker, and a wire directly to the mought bulb (a normal motorbike 5W 12V bulb).
    So I bought a simple 2X30W amplifier to feed the loudspeaker...
    02-14-2024, 10:23 AM
  • bjh06
    Help with identifying missing resistors on 820-02918 A2992 board
    by bjh06
    Hello, I have a A2992 board in which has some damage to the rear and a number of missing components. Does anybody have a good photo of this area, and could help identify the missing resistors.

    Thanks...
    09-16-2024, 04:57 AM
  • babydoll8867
    HP Eliteboox x360 G2 OLDMAN-6050a28480010 Missing resistors
    by babydoll8867
    Hi,
    I have an HP 1030 G2 and i am missing 2 resistors on the motherboard. Can anyone help me with the value of the two resistors in the attached photo?
    Thank you!...
    07-04-2023, 08:30 AM
  • Loading...
  • No more items.
Working...