| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Sony | CCDF77 | CCD-F77 ALIGNMENT PROCEDURE | There are many mistakes in the CCD-F77 alignment procedure.Will a bulletin be issued covering this? -HQ COMMENTS: A service bulletin will be issued describing thecorrections. See CSV-2 #198. | ||
| Sony | SLHF450 | NO BETA HI-FI RECORDING OR PLAYBACK | Beta Hi-Fi LED lights but no Hi-Fi sound is produced. Also noE to E line - audio is present. This seen in three different SL-HF450s. | ||
| Sony | KV27XBR15 | NO VERTICAL, REPLACED IC-1301 | No vertical. Everything checked ok. | ||
| Sony | KP7225 | SHUTDOWN, REPLACED C110 | Unit shuts down when you change channel, volume etc. TP-6812V has noise on it. Replaced C-110. -HQ COMMENTS: C-110 is main filter capacitor of high B+ standby voltage(for relay drive) from which low B+ standby voltages (5V, 12V) arederived (for RC cir | ||
| Sony | TAN77ES | SLEW RATE - EXPLANATION OF SPEC | Please explain the difference between the two slew ratefigures given in the manual. One is 150V/uSec, the other 300V/uSec(inside): What does this mean? -HQ COMMENTS: The 150 V/usec. reading is the slew rate of the preampsection. The 300 V/usec. is mea | ||
| Sony | ITM300 | BATTERY CONNECTOR REVERSED WHEN CHANGING MAIN PCB BOARD | While replacing the main PCB, I had to change all plugs inconnectors from old PCB to new PCB. I then noticed that the leads onthe battery connector were reversed. | ||
| Sony | KV32XBR10 | TEARING IN PICTURE, REPLACED C-338 "A" BOARD | Tearing and instability in picture similar to AGC problems inolder sets. Some compression of sync pulses. | ||
| Sony | KV20EXR10 | HORIZONTAL LINE ONLY; SOUND OK, L-514 COLD SOLDERED ("A") | Horizontal line only sound is ok. Voltage missing atIC-500/2. Found one end of L-514 not inserted into PCB. | ||
| Sony | STRAV1020 | LOW LEVEL BUZZ IN AUDIO | Low level buzz in one channel that appeared and disappeared asvolume control was turned up. Was not present at maximum volumeunaffected by balance control. Sounded like a ground problem. | ||
| Sony | CCDF55 | NO FUNCTIONS/NO PICTURE IN STANDBY | On FU-72 board IC-501 pin 31-system reset had approximately30Hz square wave signal. Traced to solder splash on VK-10 board, pins 5and 6 of FP-296. | ||
| Sony | CFD60 | LOW CASSETTE TAKE-UP TORQUE - EATS TAPES | Unit was eating tapes. Take-up torque was around 10g.cm. Allunits I have worked on with this transport have low torque. | ||
| Sony | KV8AD10 | BAD PICTURE | Picture pulls in on side, weak video with vertical problem orhorizontal line. 30 volt line is down to 15 volts, Q-651 is open. | ||
| Sony | KV27XBR15 | COULD NOT TURN SET OFF, REPLACED RELAY RY-601 | Could not turn set off. Relay drive voltage would toggle. | ||
| Sony | KV27EXR15 | NO SOUND - PICTURE OK, REPLACE IC-405 AND F-602 | No sound - picture is ok. The 22 volts is missing from pin 9of IC-405. | ||
| Sony | KV1927RA | PICTURE IS SMALL WHEN SET IS COLD - EXPANDS WHEN WARM, C-544 | Picture is small when set is cold - it expands as the TV warmsup. Can only turn on and off with remote. No other functions. |