Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
---|---|---|---|---|---|
Sony | KV1952RS | POOR LOW BAND RECEPTION, REPLACE BAND SW IC002 | The unit had a snowy picture on #2 and progressively gotbetter through #5. High band and UHF worked OK. We found the source ofthe problem to be a defective band switch IC. In the low position the H/Sterminal on the tuner is supposed to be -10V. It wa | ||
Sony | KV1943R | FOLD OVER ON TOP OF PICTURE, REPLACED C-523 | The unit has a fold over on the top of the picture and doesnot fill the screen. The problem is caused by C-523 drying out. This isbecoming a more common problem with this chassis now because the capacitoris located near components that become warm and | ||
Sony | SLHF300 | WON'T HOLD STATION MEMORY | The tuner would not hold memory. We found R39, R40 and C22to be missing from the SS-32 board. They never had been installed.After installing the correct parts the unit operated correctly. -HQ COMMENTS: We will watch closely for similar problems and co | ||
Sony | ICF17 | IC-1 | IC-1 is listed in parts as #8-759-300-25 or IC HD10125 when ICin unit is uPC13036. | ||
Sony | BC7 | BATTERY CHARGER FOR BC-7 | No charging - open primary. According to unit, it is made for100V - a sticker is over embossment on case marking it as made for 120V.Is it 100V unit mismarked? -HQ COMMENTS: The sticker is correct. In order to be more cost effi-cient, Tokyo uses the s | ||
Sony | STRAV360 | NO AM/FM - DISPLAY DATA INCORRECT | Unit came in with no AM/FM. When numbers were entered, randomcharacters would appear on display. Replacement of controller, IC301solved the problem. Then AM OK, but no FM tuning voltage. Checked baseof Q206 switching voltage OK, but collector voltage | ||
Sony | CCDV8AFU | POOR VIDEO, NO COLOR, POOR SYNC (CAMERA ONLY) AFTER WARM UP | Picture deteriorated (during camera use) after 2 to 3 min ofoperation. VCR picture OK. | ||
Sony | KV2781R | DARK PIC AND SATURATED RED, REPLACE PICTURE TUBE | Picture very dark, color saturated with red. Brightnesscontrol and picture control have very little control on brightness level.Had to crank G2 to maximum to get brightness. Occasional arcing, 30 minsinterval. | ||
Sony | CCDV8AFU | PICTURE PULSES ON PB AND RECORD | The picture pulses, like horizontal jitter, and whinning noisecoming from the drum motor. Voltages on Pins 22, 24 and 3 are 2.4 voltsDC and the waveforms appeared very noisy. | ||
Sony | KV2084R | ADD, ERASE AND PICTURE BUTTONS WON'T WORK, CHASSIS POSITION | Chassis was not up against front bezel. | ||
Sony | SLHF400 | INTERMITTENT REMOTE OPERATION | Remote would quit working intermittently. Found unswitched5V line noisy. C004 had both leads barely connected. | ||
Sony | SLHF400 | NOISE IN PICTURE, LOOKS LIKE DROPOUTS | In playback, three glitches appear on the screen, one near thetop, one midscreen and one close to the bottom. They look like dropouts,but they could be affected by slowing down the drum. | ||
Sony | WMF100 | BATTERY IS NOT MAKING GOOD CONTACT | Whenever the battery case becomes loose, they fail to makecontact with the battery contact. I have had three in a relatively shortperiod of time. | ||
Sony | SL5000 | NO THREADING | Threads part way, then stops. No slippage in idlers or belt.Motor DC still present when stalled. | ||
Sony | KV2781R | PICTURE BRIGHTNESS PULSED, REINSTALL ANODE CONNECTOR | Picture brightness pulsed intermittently, accompanied by aticking sound. |