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LG Slim 21 in Transistor C5149, C5296, C5885. C6090, C6092, C6093, TT2138, TT2140, TT2222, J6810, D2499, BU2520AF LED lights https://shope.ee/8pM4KrLPZ2 LED variations https://shope.ee/4AaEmLopSj LED light accessories https://shope.ee/kfokpsOP LED and spare parts https://shope.ee/kfokpsOP LED children's headscarf https://shope.ee/2ApAOudBVK LED motorcycle https://shope.ee/B461HIywa LED master https://shope.ee/4fWVNj6Ct1 LG ultra slim TV model: 21LS2RD chassis: CW81A ic 02: 24C16/epprom ic 04 : KIA78L05/vdd +5V micom ic 301 : LA78141 IC 401 : KA393 ic 501 EAN60681601/LV76211 3C 5AL5 ic 601 : LA42012 ic 810 : STRW6553 ic 804 : KIA78R09/+9V ic 805 : KIA7805/+5V FBT : BSC25N0329 pin 1 collector pin 2 B+180V pin 3 B+115V pin 4 GND pin 5 inner/N.C pin 6 B+26V pin 7 N.C pin 8 ABL pin 9 Heater pin 10 AFC Initial failure: The standby LED only flashed briefly and made a beeping sound, then disappeared. Disassemble the casing and check: T403 C6090 is not shorted D406 is not shorted FBT is not shorted D823, D824, D826 are not shorted IC 601 is not shorted Check again and find the C826 1000uf/16V elco has decreased capacity/ESR has also increased C834 2200uf/25V is also swollen Replace C826, C834, TV starts, thank God, click Additional data: A. Protection: Main protection pin 29/ABN/abnormal measured normal +4.96V Q403 BF421/OCP/overcurrent protection sensor, excessive current/load protection on the PSU. The cause of the protection could be a drop in the PSU output, due to a short circuit in T403, D406 Short circuit, FBT short circuit, IC 301 short circuit, Q405 K2961 short circuit, FR403 2.4 ohm 2 watt resistance increases Q301 vertical sync protection, will protect if IC 301 short circuits/not working normally, vertical yoke broken, FR391 broken Disable protection by unsoldering the collector of transistor Q16 C5343 B. Normal voltage data: 1. PSU: Primary PSU IC 810: Pin 1 +264VDC Pin 2 ground Pin 3 +19.4VDC Pin 4 +4.1VDC Pin 5 +1.7VDC Pin 6 0V IC 802: Pin 1 +11.43V Pin 2 +10.39V Pin 3 +7.07V Pin 4 +19.4V Secondary PSU: D826 cathode +115.2V D823 cathode +11.44V D824 cathode +20.4V 2. IC 301 LA78141: pin 1 : +2.26V pin 2 : +29.1V pin 3: +2.82V pin 4 gnd pin 5: +15.27V pin 6 : +29.4V pin 7 : +2.26V 3. IC 401 KA393: pins 1-4 gnd pin 5 : +3.12V/in EW pin 6 : + 3.04V/FBP pin 7: +2.11V/out gate pin 8 : +29.1V/vcc in Q405 K2961 FET EW: Drain: +13.89VDC 4. Horizontal driver transformer primary when ON: +56.7V 5. IC 804 KIA78R09: Pin 1: +11.44 Pin 2: +8.91V Pin 3: Ground Pin 4: +4.67V C. List of damage and solutions: 1. TV starts, the image widens and narrows following the image brightness. Check/replace: C415 333/630V 2. TV starts, TR T403 immediately shorts, check/replace: C414 183/2000V D406 RS4HF 3. The image widens to the right and left. Check/replace: D407 RU4AF Q405 K2961 4. The image curves inward. Check/replace: 401 5. EW cannot be used. Adjusted: Check/Replace: C415 333/630V C412 364 250V C413 563/630V L401 Q405 K2961 IC 401 KA393 6. IC 301 breaks during startup. B+115V is normal. Check/Replace: C415 333/630V C412 364 250V C413 563/630V C414 183/2000V. Reduce the capacity slightly and all FBT output voltages will increase. 7. TV starts quickly and then shuts down completely. Check/Replace: IC 810 STRW6553 C826 1000uf/16V DC to DC input 5 to 20 volts output 38 volt #mininchannelservice#