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Modelo - Chassis 20
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| Marca | Modelo (Chassis) | Sintoma | Causa | Solução | Por: |
|---|---|---|---|---|---|
| Sony | SL5200 | BURBLY SOUND LEFT AND RIGHT CHANNELS | Burbly sound left and right channels, self or pre-recordedBeta Hi-Fi. | ||
| Sony | CDP200 | WILL NOT TRACK DISC PROPERLY - VERY SENSITIVE | The unit will skip and miss complete tracks. | ||
| Sony | XR20 | MUTE PROBLEM | S802 (mute SW) not operating with every cycle of eject. Lub-ing did not help. When lid was removed, it operated OK. With the unitmalfunctioning in tape mode, I loosened front mtg. screw under noise pieceuntil switch clicked on and then sealed screw. | ||
| Sony | SQD2020 | NOISE IN R CH | The unit was making clicking noise in R-ch back output evenwhen the master volume control is minimum. | ||
| Sony | BMC220 | SERVICE MANUAL ERROR | Page 5 Fig. 1-4 shows incorrect test points for jig hook-up. | ||
| Sony | KV20XBR | NO COLOR AND HUE DISPLAY, REPLACED IC107 | No color and hue display. | ||
| Sony | BMC220 | INTERMITTENT DEW LIGHT | Intermittent dew light. Customer had brought the unit intoFSC twice before the unit finally failed. | ||
| Sony | HVA220 | AC ADAPTER NO LONGER AVAILABLE | Customer purchased HVC-1000, AC adapter, CMA-100. Video is OKbut audio was distorted. 800 # suggested him to purchase HVA-220. | ||
| Sony | KV1205 | POOR COLOR LOW BRIGHTNESS, REPLACED C801 | Picture looks like gray scale off, as with bad picture tube.Screen voltage to C board reads 700V, should be 900V. B+ to C board reads117V, should be 178V. Brightness control will not turn brightness downall the way. | ||
| Sony | TAE20F | ONE CHANNEL WEAK | The right channel volume level was excessive due to aninternal short (115 ohms) to ground thru the case of the control. Thismade the gain of IC251 too large due to the reduced negative feedback fromthe tone controls. | ||
| Sony | CRF320 | INTERMITTENT LOSS OF SHORT WAVE | Unit lost short wave bands once in a great while (weeks ormonths apart). | ||
| Sony | SRF20W | INTERMITTENT LOSS OF LEFT CHANNEL | Left ch. cuts out intermittently. | ||
| Sony | CDP200 | DISC TABLE MOTOR ROTATION | Disc table motor turns backwards at high speed at turn on.Circuit checked okay back to IC401. Found no RFCK 1/4 pin 23. CheckedRFCK output from IC503. No RFCK there either. Found no clock at pins 15and 16. Crystal X501 defective. | ||
| Sony | STRVX200 | NO MEMORY | No memory. If I held Pin 31 high with an external supply thenshut off power to the unit then shut off the external supply the batteryB+ was not loaded down. | ||
| Sony | STRVX200 | LOSS OF MEMORY AFTER SHUT OFF | Loss of memory after shut off. After shut off the batteryback up voltage was loaded down to 1.1V. Unit had a reset timing problem.Changed D302 from a EQA01-19RV to a EQA01-17RV. 19 zener to 17 zener.Pin 33 (IC301) is labelled STEREO MONO, should be CP |