TV Repair: Common Faults and Solutions.
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Results: 87418
Results: 87418
Repair Guide: Common Issues and Fixes
| Brand | Model | Fault | Detailed Problem | Solution | By |
|---|---|---|---|---|---|
| SONY | CCDV8 | Tape counter inoperative | Tape counter inoperative, all modes. all other functions normal. check voltage at ph602 pin 3, found to be 1.3vdc. compared with ph601 and ph603 pin 3 showed 0.59vdc. led side of ph602 open. | ||
| SONY | SLHF400 | Co-channel interference on uhf ch. 21 from ch. 27 | Local uhf channels are ch. 21 and ch. 27. co-channel appearsworse while viewing lower channel from the higher channel | ||
| SONY | KV25XBR | White vert. lines on cable | Group w cable of chicagoline on both sides of screen about 3/4 wide. | ||
| SONY | CDP70 | Intermittent operation | Sometimes unit works and can align completely but noticewhen door is open, display is out. measured +5v supply and would loaddown to almost 0vdc when door was open. | ||
| SONY | KV1722 | Dead | Starter transistor, q604 would not turn off after start up,so r631 would overheat and burn out. | ||
| SONY | SL20 | Parts | The schematic page 83 calls for q501 to be a 2sc2785. theparts list page 112 calls for q501 to be a 2sc2458. q501 in the unit hasa different transistor marking 603e or f. what is this transistor? -hq comments: the correct p/n for q501 is 8-729-245-83 | ||
| SONY | KV2670R | Delayed tuning, jungle ic-301 | When switching channels, picture flickers and audio is mutedfor several seconds. aft voltage at pins 32, 33 of ic103 bounces untilpicture stabilizes. no horiz. sync pulse from pin 3 of ic301. | ||
| SONY | WM10RV | Motor noise in headset | Harlan maurer at the minneapolis ssc reports that motor noisein one channel can be caused by a defective headphone jack. | ||
| SONY | CFS66 | Part number for roller (ref. #34) | I need the part number for the bushing designated #34 onpage 30 of the service manual. -hq comments: part number for the roller (ref. #34) is 3-578-417-00.kcp has in stock. we will issue a service bulletin. | ||
| SONY | TCK8 | Missing p/n for lcd display | We need the part number for the lcd display on this model.on page 43 of the service manual it lists a panel assy for the lcd (p/nx-3555-504-1) which is no longer available. is this the lcd or is thereanother number which i am not aware of? -hq comments | ||
| SONY | D5 | Disc motor does not rotate | The disc motor did not rotate although the inputs (clock,servo, b+, ground) were fine. we found the hall devices to be open. | ||
| SONY | PCM701ES | No playback | The unit would not play back. ic505 was not operating due tothe clock input on pin 12 being absent. we found the trouble in the vco.q524 had a b-e short and upset regulators q525 and q526. | ||
| SONY | KV1395 | Unit shuts down | The unit would shut down whenever the channels were changed.we found the hv shutdown to be activating prematurely. we found r524 tobe cold soldered. | ||
| SONY | KV1770R | Unit is dead | Found ic301 bad, ordered cx20082 by s/m, unit worked but hadno sync or color. found the ic being used in the unit different fromwhat was in the manual. ic being used cx20192 s/m cx20082. replacedcx20192, unit works ok. p/n in manual is 8-752-008-20 w | ||
| SONY | CCDV8AFU | Purple/pink raster, black lines in picture in camera mode | In camera mode, both record and e-e raster is a pinkishpurple. placing a hand in front of the lens caused black horizontallines to be generated emanating from the fingers and extending the widthof the screen. | ||
| SONY | TCFX44 | Level meter jumps | Left meter indication would bounce up to about 0db, evenwith no input. the motorboating sound typically present with this symptomwas missing. unit otherwise operated normally. record and playback wereaudibly ok. meter assy was replaced, problem persi | ||
| SONY | KV2602 | Poor vertical lock, r580 | With a change on screen from bright to dark would cause unitto loose vertical sync. with a bright scene no problem would be observed.checking input/output of sync sep (q507) transistor noticed that the syncwas lost when a low brightness scene was on scr | ||
| SONY | KV2675R | Defective picture tube kv-2675r, aperture grill off | New set out of box. color bands red, green and blue horizontal.bars from bottom to top 2 to 3 inches wide. all scope shots indicator circuit malfunction. | ||
| SONY | SLHFR70 | Rf interference when unit is powered off | Hooked up to beta was a pay tv converter with ch. 3 output andwith power off there was a lot of herringbone type interference. foundc12/14/15 not put in by factory, put in caps but still no results. | ||
| SONY | KV1975R | Fine tuning drifts, replace c202 | Set will tune stations in, but will drift after a few seconds. |