Hello everyone, you are on the Domovaya channel. Today we are repairing a Chieftec computer power supply unit model CPS-550S. Here we have APFC 10n60 PWM APFC CM6805BG power keys, 10n60 power keys for pumping and CM03AX matching bridge of MOSFETs. The power supply unit works normally at idle, the voltage is normal, under load the unit goes into protection. The computer power supply unit does not hold the load. In this video we will use an oscilloscope to find the problem and fix it. Thanks to Domovyonok https://www.donationalerts.com/r/domo... ATTENTION! All devices and loose parts, or rather links on the Vkontakte page https://vk.com/vk_domovoi Add to the group) SAVE with the EPN CashBACK service, register and help Domov) ➔ http://alii.pub/648b4h ➔➔➔➔ALL TOOLS ▼HERE▼ ▼ Devices: T12 soldering station http://shp.pub/62gwy9 T12 assembly kit http://shp.pub/62gx07 Heat HAIR DRYER http://shp.pub/62gx7s Component tester including zener diodes ♥ http://shp.pub/62gxbv http://shp.pub/62gxcg T4 ESR component tester http://shp.pub/62gxdm VGA tester for monitor http://shp.pub/62gxes LBP 30V10A http://shp.pub/62gxgj LBP 60V5A♥ http://shp.pub/646gjr ZT101 Multimeter ♥ http://shp.pub/62gxi3 5MHz Oscilloscope http://shp.pub/62gxn5 2-channel oscilloscope for 5MHz http://shp.pub/62gxop 110MHz Oscilloscope updated version ♥ http://shp.pub/62gxpv 2-channel oscilloscope 110MHz http://shp.pub/67b44w 1-10 divider probe for 5MHz and 110MHz http://shp.pub/62gxse New doctor's USB http://shp.pub/62gxvw Doctor's USB http://shp.pub/62gxwo USB load 15 watts http://shp.pub/62gy0y USB load 65 watts http://shp.pub/62gy42 Programmer ch341a http://shp.pub/62gy5m Beds for ch341a http://shp.pub/62gy76 Signal generator 1MHz http://shp.pub/62gyb9 THERMOMETER DT8220 http://shp.pub/63deh4 ATX block tester http://shp.pub/67b3yh ▼ My tools: wire stripper http://shp.pub/62gyde pliers, side cutters, needle-nose pliers http://shp.pub/62gyfc black solder sucker ♥ http://shp.pub/62gyh3 set of black screwdrivers http://shp.pub/62gyin Philips screwdrivers blue http://shp.pub/62gyke small screwdrivers http://shp.pub/62h15j VGA screwdriver http://shp.pub/62h16b scalpel http://shp.pub/62h18g red electrician's screwdrivers http://shp.pub/62h1ae tweezers (set) ♥ http://shp.pub/62h1cq SN-01BM pliers ♥ http://shp.pub/62h1f2 set of connectors http://shp.pub/62h1hs Soldering mat http://shp.pub/62h1jc t12 stand http://shp.pub/62h1m9 Contact extractor http://shp.pub/62h1n1 Multimeter probes http://shp.pub/62h1os Suction cup http://shp.pub/62h1pr Assembly table http://shp.pub/62h1rb Third hand http://shp.pub/62h1t2 Magnifying lamp http://shp.pub/62h1um ▼ My components: capacitors http://shp.pub/62h1yw power elec capacitors http://shp.pub/62h22l http://alii.pub/62h25b varistors 07471 http://shp.pub/62h281 fuses ceramics 5*20 http://shp.pub/62h29l set of zener diodes http://shp.pub/62h2ar SMD 1206 R http://shp.pub/62h2bc SMD 0805 R http://shp.pub/62h2d3 SMD 0603 R http://shp.pub/62h2dv SMD 1206 R kit http://shp.pub/62h2f8 SMD 0805 / 1206 kit Capacitors http://shp.pub/62h2hd Resistors 3W http://shp.pub/62ql97 Stabilizers 800mA Kit http://shp.pub/62h2ji Stabilizers 1.5A kit http://shp.pub/62h2l2 MS memory 24cXX http://shp.pub/62h2mm MUR1620CTR http://shp.pub/62h2or Resistors 50-100W http://shp.pub/64g9v5 E13009 http://shp.pub/65lkx7 15N60 http://shp.pub/65ll1o ▼ My modules: step-down module LM2596 3A http://shp.pub/62h2pc step-down module XL4016 9A http://shp.pub/62h2ra step-up module MT3608 2A http://shp.pub/62h2s9 step-up module XL4016 9A http://shp.pub/62h2tt Wattmeter for the pilot http://shp.pub/62h2ue Motion sensor http://shp.pub/62h2vr LED+Driver kit http://shp.pub/62h2xi LED monitor 15 ♥ http://shp.pub/62h2yh LED monitor 15-24 http://shp.pub/62h2zn PSU 12V-5A http://shp.pub/63m77j LED COB 12v10W http://shp.pub/63m7n3 ▼ My consumables for soldering: KAINA solder yellow http://shp.pub/62h549 KAINA blue solder ♥ http://shp.pub/62h56e AMTECH NC-559-ASM flux http://shp.pub/62h57y gd900 thermal paste ♥ http://shp.pub/62h59b thermal sealant http://shp.pub/62h5c8 20x20x15mm radiators http://shp.pub/62h5f5 chip radiators http://shp.pub/62h5gw metallized tape http://shp.pub/62h5ig T12 BCM2 microwave tips ♥ http://shp.pub/62h5jf T12-K / KU tips http://shp.pub/62h5kz sponge http://shp.pub/62h5ly braid http://shp.pub/62h5ni XT30/60 connectors http://shp.pub/62h5oo SM2.54 connectors http://shp.pub/62h5re 3m tape http://shp.pub/62h5ub Set of buttons for TV http://shp.pub/67pg91 ▼ Remote controls for TV: universal remote control http://shp.pub/62h5x8 remote control programmable http://shp.pub/62h62h http://alii.pub/62h641 ▼ Batteries AKB DIGMA E500/ E501 305060 1100MAH http://shp.pub/62h65l AKB Gmini magicBook Z6 306573 1500MAH http://shp.pub/62h67j 💗 Likecoin – Coins for Likes: https://likecoin.pro/@evgenii1986/kdg...