Dicas Reparação SONY
Modelo - Chassis
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| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Sony | KV1711 | NO PICTURE | This unit had excessive hum and low B+. It was evident thateither the main filter was bad or the regulator was not working. Itbecame obvious that the regulator was not working. Careful examinationfound R604 open, although it was not burnt. I have see | ||
| Sony | KV1547R | NO LOW VHF | Inspection revealed that VC voltage to tuner would not vary.Voltage at Pin 22, IC005 was always 4VDC, should be 2.1VDC, with nosignal and set tuned in to VHF low. R074 was not soldered on one end. | ||
| Sony | KV1547R | DELAY IN TURN ON, SHORT IC001/PINS 17 & 18 | I noticed that it took 4 seconds for set to come on. Also,when first turned on, response light would not illuminate. Collector ofQ010 always had a DC level on it and a noisy square wave. Pulses werealways present at Pin 18, IC001. Further inspection | ||
| Sony | KV1543R | INCORRECT TUNING OPERATION, OPEN GROUND D039/R055 | When set was turned on, it was locked into address position Aand would not tune out of this position. Any movement of M2 board wouldclear the problem. I then noticed the junction of D039 and R055 which aregrounded at a common point of the PC board, was | ||
| Sony | KV1513 | DEAD | This unit kills this IF IC after 3 days. Replacing IC andinstalling a diode on the Vcc of IC, figuring spike entering the part,with no luck. When IC was bad, no sound and picture just snow. Voltageson AGC pins are all wrong, but when new IC was put in | ||
| Sony | KV1204 | NO RASTER, REPLACED FLYBACK | No raster or lack of width with flashing lines. After setis on for about 10 to 15 minutes the flyback transformer became hot. Part# 1-439-185-00. | ||
| Sony | KP5040 | TEST SIGNAL INTERFERENCE, R3383 AND R3384 CONNECTION CHANGE | I have two KP-5040s with cross-hatch interference on weaksignal stations - cures suggested in FPRs have not helped. If I liftR3383 and R3384 from the 12 volt line and jump them to Pin 2 of connectorBA-9, and thereby remove voltage from the horizontal cr | ||
| Sony | KX2501 | HIGH PITCH SQUEAL, REPLACED T654 | When the unit would warm up there was a high pitch squeal. | ||
| Sony | KX2501 | INTERMITTENT HORIZONTAL SYNC, REPLACED IC501 | After set got warm about 5 minutes, pix would lose horizontalsync. Cooling the IC501 would correct problem. | ||
| Sony | KX2501 | POOR PICTURE, REPLACED IC103 | Customer complained of dim picture and excessive audio level. | ||
| Sony | KV9200 | PARTS INFORMATION MISSING | I need assistance with the above unit. It seems that thecircuit was modified or changed during production and this was not shownon the S/M or the two existing supplements. This particular set has adiode D402 and Q410, Q411 added to the base of Q402. | ||
| Sony | KV2650R | SET WOULD NOT GET SOME CHANNELS, REPLACE IC001 | Set would not get channels 2,3,7,8 on cable. Changed IC001.Set would then pick up missing channels, but was missing others. IC waschanged again and would pick up all but channel 13. Set was delivered tohome and would receive all channels but 3. Set r | ||
| Sony | KV2648R | SHUT DOWN, RELAY CONTACTS | Set comes on and immediately shuts down with loss of B+.Found relay contacts spaced too far apart. Therefore there was no wipingaction to the contacts at all. I have also found this problem onnumerous other sets. | ||
| Sony | KV2648R | DEAD, REPLACE Q602 AND R616 | Set came in dead. Found convertor Q602 shorted and resistorR616 open. | ||
| Sony | KV2647R | PICTURE DRAW UP AND V JITTER, C508 REVERSED | Picture would draw up from the bottom and vertical jitter. |