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Results 37055
Results 37055
Make | Model Ch. | Symptom | Problem Solution | Solution | By: |
---|---|---|---|---|---|
Samsung | SV-2303 SV633 | Intermittent functions | Check for dry joints on mode switch and clean off any grease inside the switch | ||
Philips | 27CE4599-33R 2B | Red raster and red flyback lines | One of the paralelled 75 kohm resistors of red was open, replaced with 47K in series with 27K and fault gone fault seeking in RGB output difficult due to intelligent auto calibrating-cutoff driver with picture mute TDA4580 | ||
Sony | KV2032 | Keeps changing channel | Check voltage on D12 if below 4.8V then change | ||
Fidelity | CTV3221 | Dead | Check all high value resistors in primary of the p.s.u. If the fuse is blown, expect to replace I1, Q1 and R1 as well, Probably best to do all three and check the rectifier diodes | ||
Watson | FA3629-B 11AK19-E3 | No sound | R829 4.7 ohm o/c | ||
Panasonic | NV-HD100 | Display dead rest of functions ok | Change transistor Q1701 on Timer operation board | ||
Philips | 27CE4599-33R 2B | Smearing out of one or several colors, best seen in txt-mode, my 27CE4599/30R smeared out in red and green, not in blue, fully exchanging the drivers input and output complete, otherwise the RGB driver will blank the crt moved the fault to the other color | Replace the 180K feedback resistors in the amplifiers with normal 1/4W metal film instead of 1/8W, they can become open circuited in mine both green and red were faulty in this way. Change all 3 and not just the defective ones, replace also all the paralleled 75K resistors per color fe by 47K+27K to prevent bright color raster they can also become open circuit | ||
Philips | L6.2 | No sound, no picture and the power supply makes a loud and low tone chirping noise | Replace shorted Capacitor 2912 2n2, 2kV on the deflection module. Note that 2912 is hard to find. It should be blue. If it's brown it's bust | ||
Philips | CP110 | Operating fine good picture, sound and control but sometimes sharp sounds coming from the set not via audio, sounding like the LOPT but more loud, sharp and variable 15 Khz | The long coil next to the LOPT was resonating/generating sound not the LOPT itself, solved by cleaning the top and putting a bubble of silicone kit on it, and after temporarily removing the coil from the pcb fixating a ty-wrap strongly around the bottom increasing the magnet-ferrite contact-pressure and stiffness of plastic support construction | ||
Philips | 37TA1070 CTT-H AA | No tuning voltage on tuner. Goes for: Philips and Magnavox versions. Also the Radiotone TV386VT-SCART which is the same | Resistor 3602 8Kohm broken. It is in the 95Volts line providing 33V for tuning circuit. This uses the same processor as the GR1-AX which also might have the same problem. In that case resistor 3702 is to blame | ||
Philips | GR1AX | No tuning | Check R3703 for o/c and R3702. Also in CTT-H AA , then R3602 | ||
Toshiba | 145R7B | Dead | D808 s/c due to high HT caused by faulty switch mode ic STR50020 | ||
Hitachi | C28W410SN | Sound crackles and whistles a short time after switch-on. Gets worse as set warms up | Solder all links and components that have unpainted copper areas around component legs on upper side of main board near to the audio processing I.C. The same applies to the components near the microprocessor | ||
Toshiba | 219T9B | Intermittent field collapse after a few hours | Replace field output chip IC303 AN5515 | ||
Telefunken | TX92 | Initial rustle of high voltage then nothing, goes to standby, same with remote or front panel controls | R12 burnt out 0.22ohms, replacing this plus the IC01 vertical IC TDA8177 got set working. NB: also check D01 for shorts | ||
Jrc | CTV2090 Nokia Graetz | Dead set, line fuse open | Replaced shorted chopper transistor S2000AF, replaced bulging/defective caps C507 2.2uF, 160v, C707 4.7uF 160v, C752 10uF, 160v and C759 100uF, 50v. All with 105 degree types . Plus line fuse 2.5amps | ||
Toshiba | 215R8N | Severe vertical distortion- `egghead` symptoms | Replaced c317 in vertical cct 2.2uf, 50v substituted 4.7uF. Must be 105ºtype!! | ||
Hitachi | C28W410SN A7 | The set reverts to standby intermittently | Set HT control had invisible dry joints | ||
Philips | GR1AX | TV will not start, seems dead | First measure the 100 volt rail, if it is missing, then desolder the field output transformer, then recheck the 100 volt again, if it is now present, replace the transformer : the type = 37622 replacement = fat 30057 Konig. After that everything was ok! | ||
Saba | 615 TX92F | At startup, synchronisation vertical as well as horizontal is very weak, after max. 15 minutes everything is ok. Sometimes there is no picture | First check all capacitors in the power supply. The real problem was spotted in the IF-area, the shielded space near the tuner: replace all capacitors there, especially the 2.2uF/100 volt type. I replaced it with a 3.3uF/100 volt type with excellent results! |