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Modelo - Chassis
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| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Sony | ITA305 | NO ANSWER MACHINE FUNCTION | Unit was unable to do any answer machine function (FF, REW,PLAY, OGM). Checked VCC and RESET. Both were correct. Checked forcrystal (X-601) at pin 24 and pin 25 of IC-602 and found no frequency.Found X-601 open. Also pertains to serial number 210970. | ||
| Sony | ITA205 | UNIT RINGS BUT DOES NOT CONNECT WITH OUTSIDE LINE | Unit would not connect with outside line. No audio transferor dial function but phone would ring. Also applies to serial numbers209376 and 108991. | ||
| Sony | SPP57 | NO RING/NO TALK | Found handset and base to both be transmitting and receivingand assumed problem to be code. After checking code path in handset,found D-602 cold soldered. Also applies to serial numbers 206190 and87568. | ||
| Sony | SPP57 | NO RECEIVE BASE CHANNEL "A" | Base unit would not receive on channel. X-2 was not gettingits voltage. Followed voltage from IC-5 pin 22 to a cold soldered jumperwire located above R-58 on base board. Also applies to serial number290616. | ||
| Sony | SPPA40 | NO RING/NO TALK | Unit had no ring/no talk but was intermittent. Base wouldtransmit at 44Mhz and then to the correct 46Mhz. Found X-1 to be coldsoldered. | ||
| Sony | ITA205 | DISTORTED AUDIO-TAPE DECK | Defective motor causing wow and flutter in the tape deck.Also applies to serial number 232347. | ||
| Sony | ITA305 | NO OGM OR ICM RECORDING | Have found several units in which CN-3 was not properlymounted in the main board before soldering. In one (ser. No. 198352) pin1 was open between IC-602/28 and IC-605/41 preventing OGM record. Inothers, pin 10 was open or intermittent preventing the (I | ||
| Sony | ITA205 | NO OGM OR ICM RECORDING | Have found several units in which CN-3 was not properlymounted in the main board before soldering. In one (ser. No. 198352) pin1 was open between IC-602/28 and IC-605/41 preventing OGM record. Inothers, pin 10 was open or intermittent preventing the (I | ||
| Sony | SPPA20 | NO BATTERY BACK-UP | Unit has no battery back-up, power LED always flashes, foundtwo different problems, Ref. No. 25 and/or Ref. Nos. 18/19 are missing onseveral units. also found that Ref. No. 19 is bent on several units,making bad contact to main board. Also applies to s | ||
| Sony | TAAV621 | AUDIO CUTS OUT, UNIT IN PROTECT - CHANGE R807 & R857 | I have several customer complaints regarding this problem.It occurs when in surround mode and the rear level is adjusted at 50% ormore. When the master volume is increased, unit goes into protect (relayopens). This problem occurs when in Simulated or Ha | ||
| Sony | WMF2078 | TAPE SPEED SLOW IN FORWARD DIRECTION ONLY | Tape speed slower in forward direction. It is ok in reverse.Found forward capstan bearing mount cracked. This causes forward capstangears to mesh too tightly when pinch roller presses against shaft (fourchassis from stock have crack). | ||
| Sony | CCDFX410 | NO PICTURE IN CAMERA E-E - WASHED OUT IMAGE | Only a completely washed out or whited out image in the cameraE-E mode. I checked for proper osciallation and waveforms at the timinggenerator IC-801 on the CS-31 board. The waveforms were distorted andnoisy or not present. | ||
| Sony | PCM501ES | NO AUDIO - E TO E JUMPER MISSING ON DIGITAL BOARD | No clock/VCO signals (REC mute did work). When digital boardwas replaced, there was VCO/clock signals present. Data from IC-502,(data process, record) to video out/in and through IC-506, playbacksection sync separator, to Data process, IC-507. Lost da | ||
| Sony | SLV696HF | NO FLUORESCENT DISPLAY | Unit had no display. Found no 3V DC between filament pins ofdisplay tube. | ||
| Sony | AVU270 | IMPROPER SHAPE ON PRE-PANEL ASSEMBLY (REF. 51) | Problem is where surround sound button assembly fits. Bottomof the screw hole has two (2) plastic pins sticking up adjacent to it.The inside pin (closest to the bottom button) must be removed, as well asa portion of the plastic immediately underneath. |