TV Repair: Common Faults and Solutions.
Search:
Results: 87427
Results: 87427
Repair Guide: Common Issues and Fixes
| Brand | Model | Fault | Detailed Problem | Solution | By |
|---|---|---|---|---|---|
| SONY | CCDV3 | Service manual error | For proper interpretation of which switch is fast forward orrewind, the arrow drawn above s353 should be reversed on page 117. -hq comments: we will publish a service bulletin on this. | ||
| SONY | CCDV5 | Service manual error/page 137/play switch | For proper interpretation of which switch is fast forward orrewind, the arrow above s353 (play switch) should be reversed on page 137. -hq comments: we will publish a service bulletin. | ||
| SONY | AVU270 | Unit would not retain memory | Unit would not maintain memory. schematic shows c503 on anodeside of d519 - not correct - c503 is on cathode of d519. found also an-other 10uf in parallel which was factory installed. both caps had de-creased in value. | ||
| SONY | SLHF750 | Service manual correction: rmt-143 exploded view | There is an error on page 241 of the service manual. | ||
| SONY | EVS800 | Service manual correction: rmt-424 exploded view | There is an error on page 313 of the service manual. | ||
| SONY | KV2729R | Dark picture, open r-552 on a board | With the brightness and picture control to max. picture wasvery dark. this makes the second unit i have found with this problem. | ||
| SONY | SLHF750 | Unit dead | Unit was completely dead, i.e., no on/off function, no displayof any kind. tests revealed all dc voltages present and clock pulses werealso ok. clue to problem was pin 17, ic-1 on (fl-11) board. it neverwent low, but always had 3.5 vdc on it. obvious | ||
| SONY | CCDV5 | Drum motor does not start without help of battery | Drum motor does not start by itself on battery, but it workson ac. i replaced ic-509, 510 and 303 without avail. the only way tostart the drum on battery is by giving it a quick spin when it starts torock. -hq comments: one of the components on the bo | ||
| SONY | D15 | Incorrect part number in manual | Part number is wrong. | ||
| SONY | KV2771R | Picture flickers, replace if block | When channel is changed, picture would flicker for 2 or 3seconds. scoping the detector output you could see the video flicker. | ||
| SONY | KV2680R | Audio only on stereo stations, replace lpf | Customer complained of low volume and no sound on non-stereostations. i also found that when going to (both) modes i had no audio. | ||
| SONY | WM35 | Part number for rubber gasket over control buttons | The rubber which is around the control buttons is not listedseparately. you have to order the cabinet assembly. is there a partnumber for the membrane? the units are used by different companies fora tape tour in tourist facilities. the constant use c | ||
| SONY | CFSD20 | Direction lever sticks/inoperative | Orange wire between s401-3 and (md) board gets caught betweenwiring guide d (230) and button (9) on manual button lever (218). some-times the button pushes the wire out of the way, other times not. | ||
| SONY | SLHF840D | Incomplete thread then eject | Unit would thread part way then unthread and eject. could notfind any problem with the switches or end of tape sensors. the symptomsindicated a problem with rotation detectors but this style chassis doesnot have detectors under the reel tables. found | ||
| SONY | SL2400 | Poor performance at low (105vac) line voltage | Loose servo lock at low line voltages (105vac). some unitshave this problem and others do not. is there something i should bechecking in the power supply, or is this variation normal? -hq comments: the power requirements of this unit are 120vac+/-10%. | ||
| SONY | KV1370R | Audio output failure, see service bulletin #291r | Late production of kv-1370r uses discreet audio outputs thatfail and should be included in tv service bulletin no. 291r. the samecircuit as kv-1365, 1395, 1396 and 1397. -hq comments: we will add the above models to the service bulletin no.291r. | ||
| SONY | WMD6 | Distortion in right channel | Low level distortion in right channel in record mode. foundc-203 open. | ||
| SONY | KV25DXR | All displays appear in black/hmh and rgb blankout | All on screen displays ere black. hmh and rgb would blank outthe screen when they were selected. found no output from ic306 - rgboutput pins. found no h.v. blk. pulse on pins 8 and 9 going into ic306.traced this back to (bd board) output ckey+udhblk. | ||
| SONY | CCDV110 | No reel counter operation | Reel counter looks like its trying to count (1st digit seemsto flicker) but stays at zero. | ||
| SONY | XR6150 | No ams function or audio output | No audio, no ams. dealers complaint: no audio output. foundq405 and pm901 destroyed. |