Mastervolt Chargemaster 12/35-3 Charger - Failed repair - erratic output

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • Randolfo
    New Member
    • Dec 2016
    • 2
    • Brasil

    #21
    Re: Mastervolt Chargemaster 12/35-3 Charger - Failed repair - erratic output

    Thanks for the response Mr. Capleaker. I informed you that I am using the UC3845 IC in place of the UC2845 and that the ZDB8 zener that sits on the side of the UC2845 was shorted so I put a 6V8 Zener. Because the colors I saw in this zener were red, gray and blue, I interpreted DZ6V8. The load is not being triggered, nor are the LEDs lit. Thank you for your attention. Randolfo.

    Comment

    Related Topics

    Collapse

    • FrancescoV
      Onkyo HT-R390 no sound output, video output ok
      by FrancescoV
      Good morning everyone,
      I'm trying to repair an onkyo ht-r390 that has no sound output, despite the volume being at maximum, the rest seems to work; the video output signal (coming from an hdmi input) is present, but the audio is absent. Similar situation if I send an audio signal from any input I have no output.

      The firmware reported is the following:
      M:1.00/11107BLP
      D:?.??/????????
      O:1.00/11107AL

      The DSP firmware given the question marks seems corrupt.

      On the BCHDM-0678 - 25140678 - QPWBCHDM0678A0 board the chip that usually seems...
      05-11-2025, 02:59 AM
    • nath1977
      Wier WA505 SMPSU output failed
      by nath1977
      Hi,
      Im about to repair a failed Wier WA505 power supply which hasn't been used for many years. It was working for 30 mins or so, then started to smell bad so switched it off quick.
      On closer inspection a 1500uF cap across the 5v output has swollen. Adjacent to this is an overheated (open circuit) resistor.
      Ive removed the electrolytic cap and resistor - the cap replacement is straightforward and will replace the adjacent ones at the same time. The resistor looks like it sits across the output. Any ideas what value this is likely to be? Was thinking 100R 1/2watt would be suitable....
      10-01-2023, 06:05 AM
    • coasterghost
      Lenovo T14 Gen 2 Type 20XK Model 20XK0069US Odd Charging Issues
      by coasterghost
      For Badcaps Readers, Please note that I am hopefully going to present this same message to Lenovo to see if they have any insight to the matter as well and figured to share the entirety here for clarification. The System is out of warranty as it is but does have the option to have it extended.

      Model Information: T14 Gen 2 (Type 20XK, 20XL) Laptop (ThinkPad) - Type 20XK - Model 20XK0069US
      Board: T14 Gen 2 (Type 20XK, 20XL) - Type 20XK.

      System Hardware:
      Processor: AMD Ryzen 7 PRO 5850U
      Memory: 1x 16GB DDR4 3200 (Soldered on Board); 1x Crucial 32GB DDR4...
      09-08-2025, 10:46 PM
    • Document Archive
      ISL88739AHRZ ISL88739 Laptop Battery Charger Datasheet
      by Document Archive
      The ISL88739 & ISL88739AHRZ are a highly versatile combo battery charger
      configurable for operating as either a Hybrid Power Boost (HPB)
      charger or a Narrow VDC (NVDC) charger, supporting 2-, 3-, or
      4-cell batteries. Both configurations allow the battery to work with
      the adapter together to supply the system load when it exceeds
      the adapter capability, referred to as system Turbo mode. HPB
      charger configuration reverse-boosts battery energy to the system
      bus to help the adapter provide the system power in Turbo mode.
      NVDC charger configuration...
      11-05-2024, 03:28 PM
    • ahmedtou
      HOW CAN I UPDATE HL-DT-ST BD-RE GGW-H20N XA02
      by ahmedtou
      Hi everyone,
      help me please


      I have an HL-DT-ST BD-RE GGW-H20N with ROM version: XA02.




      When I tried to burn a 25GB Blu-ray disc using ImgBurn, I got an error.
      I will share all the details with you, including the disc information.




      Code:
      HL-DT-ST BD-RE  GGW-H20N XA02 (ATA)
      Current Profile: BD-R
      
      Disc Information:
      Status: Empty
      State of Last Session: Empty
      Erasable: No
      Free Sectors: 12,219,392
      Free Space: 25,025,314,816 bytes
      Free Time: 2715:27:17 (MM:SS:FF)
      Next
      ...
      08-27-2025, 08:49 AM
    • Loading...
    • No more items.
    Working...