Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por:![]() |
---|---|---|---|---|---|
Sony | KV2020 | No Sound | Replace sound i.c TBA120U | ||
Sony | FE-1 | No picture or dark picture | Check R516 56Kohms, 0.5w or R517 27Kohms, 0.25w for high resistance or o/c | ||
Sony | FE-1 | Excessive width | This was due to Q532 2SK2251-01 being s/c, it is advisable to also check other EW circuit components as a precaution | ||
Sony | KVM1400 | Will not power up, red LED blinks twice | Replace ICP fuse in HT line PS801 N15, 600mA mounted adjacent to pin 7 of LOPT | ||
Sony | KV2165MT | Main fuse blasted | Replace the STR50115 | ||
Sony | FE-1 | Band of interference down left of screen on dark scenes | This was cured by adding a 1000pF, 2kV capacitor part no. 1-161-731-81 in parallel with D539 in the EW diode modulator circuit | ||
Sony | FE-1 | Loss of one colour with teletext and on-screen displays | Check the appropriate 2SC2412K transistor Q007 green, Q008 blue or Q009 red | ||
Sony | KV28WS2U | No sound, speakers pop out if volume is raised from zero. Audio output from Dolby A1 board at +5v dc. | Lightning damage to this set and connected VCR. Centre/surround amplifier IC shorted blowing IC protector to its negative rail. Both amplifier ICs replaced as a precaution. No damage to Dolby A1 board | ||
Sony | KV-25M80 BG-2 | Dead | 5V Supply Transformer Short | ||
Sony | KVS3432U AE2 | Front led flashing 13 times, HT at first came on at 139V then went to 75V going off etc shuting back down in protection mode | Found R854 open circuit on -15 volt line off line output transformer | ||
Sony | KV2184 | Main fuse blasted | Replace the STR50115, also replace the mains electrolytic capacitor | ||
Sony | FE-1 | No teltext just P100 | This problem was caused by Q405 2SC2412K being s/c | ||
Sony | FE-1 | No power although relay operates main p.s.u inoperative | Check IC606 STRF6654 for failure, also check resistors R659 0.33ohms,3w, R660 0.39ohms,3w, fusible resistor R603 0.1ohms,0.5w and capacitor C625 100uF,25v | ||
Sony | KX27PSI | Almost totally dead. No video or audio whatsoever. Only the clicking sound of two power relays when the set is turned on, and conversely at power down. The green/red lights on the front panel do appear. Repeated failure every 2-3 years. Why ? | An insight into what TV engineers did, after speaking to Sony UK: a 0.47K resistor replaces L656 in line to Q651 B. b 0.33 ohm resistor added between L650 and Q651 E. A resistor also replaces L657. Still lasted only 2 years. Any better ideas ? | ||
Sony | KVA2942U | LED A flashes once, LED B flashes 13 times. | Bad solder joints on field IC1501 on back edge of main PCB |