Replacement caps for Main Signal Unit

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  • black6host
    Replacement caps for Samson Resolv studio monitor 65A Amp board.
    by black6host
    Good day!

    I have a Samson Resolv studio monitor that has no sound output. I've opened it up and found two caps that are bulging on what I believe to be the power supply section of the amplifier board. The board is marked Resolv 65A AMP V1.2. The caps in question are YUSCON, 2200uF, 35V, 85C temp and have markings of RA(P) and are 16mm x 25.5mm tall. I've attached the schematic and the caps in question are C5 and C6. I'm assuming they are low esr caps. I've tested both caps and they test low uF, nowhere near 2200uF.

    I'm going to replace the caps and I'll be the first...
    02-06-2024, 08:22 PM
  • cmlewis89
    LG 47LB5DF blown power supply board
    by cmlewis89
    Hi folks,

    I'm new to this forum. So my trusty 17-year-old LG 47" LCD recently died. As I was booting it up, I heard a hum followed by a loud bang, sounds of pieces flying around, and loss of power to the unit. Inspecting the PSU, I saw two obvious problems: a blown thermistor (bang + flung pieces) and a visibly bulging main cap. Inspecting as many components as I could with my Fluke MM, I diagnosed that the following components on the "hot side" of the board were also bad: one of the 2 main MOSFETs, main 8A fuse, small cap (25V 47uF) connected to main caps, and a blown...
    12 Photos
    09-03-2024, 07:50 PM
  • rewease
    Replacement for the Siemens Bakelite caps in an early 1980s SMPS
    by rewease
    Hi everyone,

    There actually was a time when early SMPS and late bakelite housed electrolytic caps coexisted in high end industrial gear. A friend of mine just got himself a CNC milling machine form that time with its first set of now 41 year old caps still installed in the PSU... and it's malfunctioning.

    Two of the caps have already leaked slightly onto the board. I have not desoldered or measured any so far but they should qualify for replacement.

    Now I'm wondering what to put in there as a replacement. First idea was state of the art low-ESR Nippon KY,...
    09-17-2023, 12:53 AM
  • momaka
    Seasonic B12 BC-550 – barely 2 years old and with BAD CAPS already!
    by momaka
    I know I've been a little scarce lately (like the last 2-3 years), but I'm still here and still doing my thing with fixing PSUs.

    For today's considerations, I have a Seasonic B12 BC-550 [A551bcafh] 550 Watt ATX power supply for you (click on links for full size images).

    https://www.badcaps.net/filedata/fetch?id=3591771


    https://www.badcaps.net/filedata/fetch?id=3591772

    It's a modern ATX unit with fixed (non-modular) cables and an 80-plus bronze certificate. Here's the label:

    https://www.badcaps.net/filedata/fetch?id=359177...
    03-12-2025, 03:42 PM
  • crosswinds
    Assistance with identifying replacement caps on ASUS P5VDZ-MX
    by crosswinds
    Hello,

    So, pulled a motherboard out from storage, was working when put away, wont post when I took it out of storage today.
    Since it was working, and it looks to be essentially time that killed it I figured its a good idea to replace the caps before digging further.
    Looks to be only good quality caps on this board, so might not be the issue. But it is closing in on 20 years now so, wont hurt i guess

    Its a ASUS P5VDZ-MX board.

    I would really appreciate some assistance on what the best replacement caps would be for these:

    Panasonic(M)...
    04-17-2024, 04:25 PM
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