TV Repair: Common Faults and Solutions.
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Results: 87441
Results: 87441
Repair Guide: Common Issues and Fixes
| Brand | Model | Fault | Detailed Problem | Solution | By |
|---|---|---|---|---|---|
| SONY | KV2691R | Intermittent loss of y signal, poor solder on 9v reg q-204 | The unit would very intermittently loose the y signal. onlychroma would be present on the crt and the chroma level would be low. wefound the problem to be poor connections around the 9 volt regulator,q-204. when in the failure mode, the 9 volt line wo | ||
| SONY | KPR41DS2 | Dark picture - g2 low, replaced d-5052 | The crts were all low in brightness. all voltages to the crtschecked ok except the g2 was a little low (max. 230v). we found dioded-5052 on the e board to be leaky. replacement resolved the problem. -hq comments: when d-5052 becomes leaky, it can no | ||
| SONY | CDXA10 | Commander hook-up | When using your bench test commander, replace the unit'sexisting cord (p/n x33295361), which is about 15 feet long, with the cordfrom an rmx2 (p/n 1-559-687-11), which is about 1 foot long. this makesworking on cdx-a10s easier. the cords are interchang | ||
| SONY | SLV353UC | No power after ac re-connection | If ac cord is disconnected, power will not come back on whencord is re-connected. all other operations are normal. | ||
| SONY | D25 | Unit will not power up - cold solder d-409 cathode | Unit has no power. this is the fourth unit with this problem. | ||
| SONY | GV8 | Will not eject | When the eject mechanism unloads halfway, unit stops.troubleshoot mechanism, no fault found. checked pulse for off sensor, nopulse. measured for 5v on pin 2 of cn-006 of sv-34 board, found 5vmissing. checked voltage around q-112, found emitter of q-11 | ||
| SONY | MVCC1 | Disk pack will not eject, adjusted plate ass'y | Disk pack will not eject. | ||
| SONY | CCDV5000 | In pcm mode no right channel | No right channel in pcm mode. | ||
| SONY | KV32XBR65 | Gains time, see s/b tvp-0087 | Installed capacitor modification as per service bulletin0087. it has resolved the problem. before addition of apacitor you couldunplug the set, plug it back in and it would work for 15 to 20 minutes andthen start gaining time. -hq comments: thaks for t | ||
| SONY | KV20TS20 | Severe pie crust effect, open c-501 | Unit exhibits severe pie crusting. scope pin 11 showingdistorted in horizontal drive output. indicating a bad ic-301. thenreplaced ic-301 problem still exists. did a component by component checkfor open capacitor in horizontal oscillator drive sectio | ||
| SONY | MVCC1 | Jamming of disk packs, replaced loading gear | Unit would jam while ejecting. | ||
| SONY | MVCC1 | Eject motor runs for 1 second then stops, replace ic601 | When ejecting a disc pack, the eject motor would run for abouta second then all motion would cease. | ||
| SONY | MVCC1 | Spindle motor runs continuously, replaced stepping motor | Spindle motor runs continuously. | ||
| SONY | MVCC1 | No power, replaced d301 - d308 | Have seen diodes d301-d308 fail several times, more commonlygoing short circuit. -hq comments: thank you for the information. | ||
| SONY | D7 | Unit powers up - spindle motor/no torque to spin disk | Unit powers up, display comes on, fop tries to focus butspindle motor does not have enough torque to spin disk. | ||
| SONY | MVCC1 | Intermittent operation, replaced q329 on ma-1 board | Intermittent operation of unit. | ||
| SONY | MVCC1 | No power, replaced q310 on ma-1 board | No power. | ||
| SONY | KV27HSR10 | Cold solder connections on t-501 | Unit dead, no horizontal drive pulse. | ||
| SONY | CCDF35 | Will not eject tapes | Will not eject cassettes. | ||
| SONY | ITA750 | No tone dialing and always picks up on one ring | No tone dialing and always picks up on one ring. |