Repair Tips




Search:
Results 37055
MakeModel Ch.SymptomProblem SolutionSolutionBy:
Toshiba 28W8DB
No frame drive however sound and line drive is presentE/W correction chip TA1240 at front of line/frame was defective, replacing the IC cured the fault
Matsui Vid Combi Model: TVR185
Accepts tape then immediately ejects itThe capstan motor was faulty. Fitted new motor
Panasonic TX-21S3T
No line driveThis one had me puzzled for a while until I found that diode D861 was open-circuit intermittently!
Philips 28PW6005 A10
Changes to ext 1 when watching tv ok with video inputIC7064 defective, replace it. Philips best nr= 311125054501. price = 48 euro, after replacement the smart settings have been set to 255 read the instruction note for this software!! Code number instruction note = 996500013923
Sony BE3D
Picture too big, maybe strange colors, shuts down after a few secondsCheck for shorts in IC606 9V voltage reg
Nokia Euro Stereo 2
Hard to turn on, hissing sound, bad pictureCheck C787 10uF, 50V
Sharp 51DT25H U
No audio R305 o/cR305 2.2ohm, Q3021 BC636, Q3011 BC635
Sony BE1
Loss of sound when set was cold / extremely distorted sound when cold after set was turned onSound recovered within a few minutes of turn-on and was then normal. Check the electrolytic capacitors and diode near to the audio output IC heatsink. 100% rectification was achieved by replacing the diode and small value electrolytics in the immediate area of this IC's heatsink
Panasonic NVHD100
Narrow sync pulse output in E-E but ok when pre-recorded tape is playedReplace 3.3uF, 50v SM capacitor on hybrid IC301, If fault persists replace IC301 on the Y/C sub board
Sansui SV-20BG 11AK03
No verticalR822 15K open
Grundig CUC4400
E.H.T very weird, E.H.T. transformer makes strange sound, no imageMeasure pin 1 of the TDA2579, if there are vertical pulses then measure pin 11 of the TDA2579 for hor. pulses, If missing, or voltages are very low Mv replace the IC. The ref. voltage on pin 12 will be present if the TDA2579 works correctly. Measure on pin 10 of the PS
Grundig CUC4400
No image from tuner. Image from AV input rgb is rolling over the screen no synchronisationCheck if teletext is present at the top of the screen. If this is ok replace the TDA5931 normally the sound will also be missing
Sinudyne 34B0A
Geometric distortion, Pillow, and picture enlarged horizontalyThe problem was a short from GND to pin 11 inside IC301 TDA8350Q. This pin is the output of amplifier for geometric correction signal. Replace IC301
Finlux SN87A2
No sound or pictureCheck R44 for o/c and D20 for s/c
Salora K K
No e/w correctionThis was due to T504
Philips CP110
Vertical ripples on horizontalsReplaced C2633 100µF, 25V
Philips CP110
Image appeared after a 5-20 minutes, sound was choppy when changed by the remoteReplaced C2690 100µF, 50V with a 100µF, 63V type, this is located on the small overvolt board in the power supply area
Goodmans GTV69W3 11AK19
East West distortion, only 16:9 availableResoldered numerous dry joints around east west and heater circuitry. R629 27R 1/4 W Safety found open circuit. Replacement + resoldering cured fault.
Grundig ST82-675/9 TOP CUC6380
Dead set, TrippingLOPTX short circuit between most pins!
Philips GR2
Sound but no pictureCheck the LOT cable for short circuit