Dicas Reparação
Modelo - Chassis KV2782R
Pesquisa: KV2782R Enviar Dica Resolvida
Resultados 22
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| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Sony | KV2782R | REPLACEMENT "A" BOARD/NO REMOTE, NEW BOARD DEFECTIVE | Received a replacement A board from Kansas City Parts andinstalled. Everything worked normaly except no remote control. Found noSIRCS on IC-101/pin 8 on the A board. Scoped SIRCS on IC-001/pin 2 onthe MA board. | ||
| Sony | KV2782R | UHF DRIFTS - VHF OK, REPLACE TU-101 | Performed voltage analysis tuning voltage chart. Bandswitch-ing and tuning voltage were operating correctly and all other voltageswere present. Still no UHF or drifting when locked in. | ||
| Sony | KV2782R | GA BOARD PART NUMBER INCORRECT, BLANK BOARD P/N 1-616-071-11 | Part number for the GA board is incorrect. | ||
| Sony | KV2782R | INCORRECT PART NUMBER IN SERVICE MANUAL | Part number in service manual (page 19, Ref. No. 6)9-910-999-51, is incorrect. The same part number 9-910-999-51 is foundin the KV-2680R service manual on page 46, Ref. No. 9 .... the samesolution applies. | ||
| Sony | KV2782R | INTERMITTENT SHUT DOWN AND/OR HORZ FREQ DRIFT, REPLACE R-515 | Horz. freq. would drift off. A service call made to re-adjusthorz. freq. control. Customer then complained unit would shut down sometime and horz. would drift. Many parts were tried before R515 was con-firmed. SOLUTION: Replace open resistor (R515). | ||
| Sony | KV2782R | DEAD/SHUTDOWN, REPLACE Q-653 | Initially set was dead. Would not trigger relay at power on.IC651 corrected first problem. Second problem was intermittent shutdowndue to voltage rising at OVP detector Pin 2 IC651 (GB board). | ||
| Sony | KV2782R | SERVICE MANUAL CORRECTION, R-538 47K AND R-566 10K | R538 shown as 47 ohms, really is 47K. R543 shown as 47K,really is 150K. R566 shown as 15K, really is 10K. All are around Q506pulse amp. -HQ COMMENTS: We will issue a correction on this. | ||
| Sony | KV2782R | SHUTS DOWN, REPLACE DAMPER D-516 | When unit is turned on, it will shut down immediately.Troubleshoot set using low voltage. Found horizontal output distorted.Traced problem to a shorted damper diode. | ||
| Sony | KV2782R | CRT CRACKED, REPLACE D-505 AND CRT | CRT with neck cracked inside the yoke area. Prior to connect-ing the chassis to new CRT, the set was operated OK on the bench jig. HVmeasured 24KV. In second set, anode voltage measured 28 to 29KV. Picturedisplayed severe pin cushion distortion. Fou | ||
| Sony | KV2782R | SHUTDOWN, REPLACE C-681 | Servicer said that B+ was only about 100VDC and if any higher,the set would shut down. By disabling control pin on regulator IC, hecould get B+ up to 135VDC and set would work OK. Regulator IC and severalother parts had been replaced. I suggested that | ||
| Sony | KV2782R | SET LOCK ON ONE CHANNEL, REINSTALL FRONT PANEL | Set was locked to one channel and AUX was being displayed.Found AUX/ANT switch closed. By removing the control panel, problemdisappeared. This is the third set. I have seen with this problem andby only removing the control panel, the problem cures its | ||
| Sony | KV2782R | POP IN SOUND ON BRIGHT TO DARK PIX TRANSITIONS, C-672 | Sound pops on scenes such as Star War type laser blasts &quick flash backs. 18V power supply rises from 18-23V (dark to bright)and decays rapidly with a spike preceeding decay (bright to dark). | ||
| Sony | KV2782R | POP IN SOUND, ADD CIRCUIT ON "X" BOARD | Pop in sound at speakers when going thru empty channel. | ||
| Sony | KV2782R | TELEMATIC JIG ADAPTER, SEE SB TVP0158R1 | We need Telematic jig adapter for picture tube. Can youprovide adapter, or adapter number so we can order? -HQ COMMENTS: Use Telematic adapter.Yoke 10J 733 settings Vert 8, Hor 1.2CRT 10J 766Focus voltage supply FVS-3950 & 10J711 now replaced w | ||
| Sony | KV2782R | SLEEP LIGHT COMES ON, NO OTHER FUNCTIONS, REPLACE R-555 | With unit turned on, sleep light would come on, hi-voltagewould come up, no other functions, no sound, no raster. Scoped IC101 onA board, Pin 7 found no vertical pulse. Traced problem to D board,found no vertical output. Found no 27 volts on Pin 7 of |