Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
---|---|---|---|---|---|
Sony | KV2650R | SNOWY PICTURE, REPLACED BAND SWITCH IC002 | The set would occasionally tune in the VHF low channels. Allother channels were snow. We found the band switch IC to be defective.This is becoming more common problem with the units using the LA7920 IC. | ||
Sony | KV2654R | COLOR ON B/W PICTURE, ADJ CV-301 | Color confetti on B/W telecast. | ||
Sony | KV2650RX | NO PICTURE, REPLACE IC002 | VC voltage on chs. 2/3/4 was low - below 2 volts. Chs. 5/6and all others were fine. Found 4 volts at Pin U on tuner. | ||
Sony | XR65 | MALFUNCTIONING IC303 | AMS worked. Display would not light up. IC303/Q outputalways low. | ||
Sony | XR65 | OPEN TRACE | Foil open on volume control board. This foil appears to haveburned open. | ||
Sony | KV2650R | AFT DRIFT, LEAKY Q024 | When you tuned a station it appeared as if the AFT wassearching before it locked in on the strongest portion of the signal.VC was changing slightly before it locked. | ||
Sony | KV2654R | PICTURE UP/DOWN BUTTON STUCK, REPLACE S004/005/006 | Picture up button was stuck. Therefore volume up/down andpicture up/down or channel up/down would not work. Found picture upbutton was worn. This switch was spring loaded in rather than out. | ||
Sony | KV2654R | SHUT DOWN, REPLACE Q501 AND Q502 | If set was turned on with 120VAC, horiz. output would shortout within 2 to 3 seconds. Removing collector B+ off horizontal outputI was able to bring set up to 120VAC and observe the driver output. Foundwaveform to be distorted, should look like a squar | ||
Sony | KV2654R | NO TUNING OPERATION, SHORTED CP004 | Would lock up on one channel also unable to tune stationproperly. Found one of the 220pF capacitors in CP004 shorted placing 24volts on the line of the VC as well as the channel select line. There areno P/N's in the manual for CP001/002/003/004 on the | ||
Sony | TCK65 | CAPSTAN MOTOR | We found the capstan motor siezed as a result of the rearbearing coming loose. This locked position caused the motor drives tooverheat and short which in turn burnt the board. | ||
Sony | PSX65 | DEFECTIVE IC106 | All functions inoperative. | ||
Sony | KV2650R | NO OPERATION, REPLACED D021 | Unit cannot be turned off except by master switch, no functionon any mode, i.e. power on/off volume up/down, channel up/down, pictureup/down etc. Voltage on Pin 2 on IC001 was high (4.8V). Found D021leaky (500K). | ||
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 | TCK65 | DEFECTIVE MOTOR | Customer complained that intermittently, unit would lock up,no functions would work. Found that intermittently, capstan motor wouldnot start up when power was applied to the unit. | ||
Sony | TCK65 | DEFECTIVE IC802 | After operating approx. 1.5 to 3 hrs, the transport willstop - rewind - stop. The LED display will then indicate 1 and none ofthe function switches have any effect. This is with RMS off, with RMS on- cannot be programmed. Found Pins 12, 13, 15, 16 of |