| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Sony | XR3500 | NO AUDIO (FOUND AUDIO AMP IC DEFECTIVE) | No audio output. | ||
| Sony | XR2900 | NO TAPE FUNCTION (FOUND PM701, Q301, AND IC301 DEFECTIVE) | No tape function. Found AMS solenoid PM701 overheated,causing the coil to short. Q301 solenoid drive transistor was shorted andIC301 (FF-REW amp) was also shorted. | ||
| Sony | MDXU1 | POPPING NOISE WHEN BUTTONS PRESSED (FOUND FB301 OPEN) | Unit makes popping noise every time a button is depressed.Found FB301 ferrite bead open. | ||
| Sony | MDXC150 | NO AUDIO (FOUND AUDIO AMP IC700 DEFECTIVE) | No audio. Found audio amp IC700 defective. -HQ COMMENTS: Tokyo has analyzed samples we sent them and havedetermined that the defects are ususally caused by excessive reversevoltage being applied to the IC, probably by the power antenna relayturning off | ||
| Sony | MDX400 | NO AUDIO WITHOUT HIDEAWAY UNIT DURING SERVICING | Found IC302 original fault of no audio. Only had MDX400, nohideaway unit. After changing IC302 found it still had no audio throughmy STRD790 bench receiver. Found audio coming out of IC301/26, 25, 24,23 but no audio on IC101/3 or IC201/5. All legs of | ||
| Sony | EXR21 | NO AUDIO (FOUND AUDIO AMP IC901 DEFECTIVE) | No audio. Found audio amp IC901 defective. -HQ COMMENTS: Tokyo has analyzed samples we sent them and havedetermined that the defects are ususally caused by excessive reversevoltage being applied to the IC, probably by the power antenna relayturning off | ||
| Sony | EXCD90 | NO AUDIO (FOUND AUDIO AMP IC303 DEFECTIVE) | No audio. Found audio amp IC303 defective. -HQ COMMENTS: Tokyo has analyzed samples we sent them and havedetermined that the defects are ususally caused by excessive reversevoltage being applied to the IC, probably by the power antenna relayturning off | ||
| Sony | DTX10 | DISPLAYS ERR E-88 WHILE PLAYING TAPE @ 32KHZ, THEN EJECTS | On low speed (32 KHz) the unit plays 10 seconds, thendisplays E-88 and ejects the tape. Sometimes it plays OK on high speed(48 KHz). | ||
| Sony | CDXU8000 | DOESN'T LOAD CD (FOUND Q950 DEFECTIVE) | FM/AM working fine, but unit won't take in CD. Found loadingmotor not working. Tracing B+, found Q950 defective. | ||
| Sony | CDXC590 | NO AUDIO (FOUND AUDIO AMP IC304 DEFECTIVE) | No audio. Found audio amp IC 304 defective. -HQ COMMENTS: Tokyo has analyzed samples we sent them and havedetermined that the defects are ususally caused by excessive reversevoltage being applied to the IC, probably by the power antenna relayturning of | ||
| Sony | CDXC490 | NO AUDIO (FOUND AUDIO AMP IC304 DEFECTIVE) | No audio. Found audio amp IC304 defective. -HQ COMMENTS: Tokyo has analyzed samples we sent them and havedetermined that the defects are ususally caused by excessive reversevoltage being applied to the IC, probably by the power antenna relayturning off | ||
| Sony | CDX7560 | DOES NOT CHUCK DISCS (FOUND CNJ3 DEFECTIVE) | Disc is drawn into mechanism, but won't chuck, it will chuckand play upside down but not chuck at normal position. | ||
| Sony | CDX5490 | NO AUDIO (FOUND AUDIO AMP IC303 DEFECTIVE) | No audio. Found audio amp IC303 defective. -HQ COMMENTS: Tokyo has analyzed samples we sent them and havedetermined that the defects are ususally caused by excessive reversevoltage being applied to the IC, probably by the power antenna relayturning off | ||
| Sony | CDX5490 | DISPLAY LAMP NOT ILLUMINATING (RESOLDERED LAMP) | Pilot lamp in faceplate was not illuminating. | ||
| Sony | CDX5290 | CLICKING DURING LOADING, THEN CD IS EJECTED | CD loads and makes continuous mech noise (clicking) then unitwill eject CD. Found one of the arms of the roller assembly slightly bentbackward causing gears to engage during CD loading. |