Repair Tips




Search:
Results 37055
MakeModel Ch.SymptomProblem SolutionSolutionBy:
Samsung CB5035Z
Stuck in osd mode, no functionsChange the eprom, check that the earthing of the green cable running from tuner is OK
Salora M
Procedure to enter service modePress P then * then 0/AV then # then >M * and # change function Vol+ and Vol- change value >M store current value TV exit service mode 1..7 and . bytes option
Philips 27CE4599-33R 2A
No sound, with sound at maximum you can hear a weak noiseChange IC7102 U2830B if found, if not U2829B, this IC is located on the sound demod pcb
Sony KV27EXR25
No raster, the set will click on but no high voltageReplaced IC651 on the power board type STRS6301 Note: Use an original STRS6301, not an STRS6301A unless the 6301A comes from SONY This part does run very hot
Philips VR723 LUCY
Power supply LSM-45 would not start up after power failureCooling down of the machine during the power outtage triggered the problem: inside the supply module excessive heat is present that causes components to age rapidly, especially those that are located close to the heatsink. Replaced cap. 2116 100nF, 400V
Philips VR722 LUCY
LSM-45 power supply faulty after power failureReplaced elco 2112 100µF, 385V and capacitor 2116 100nF, 400V. See also my tip about the philips VR-723 Cooling down during power outtage. Cheers
Aiko / Perdio 512
Excessive brightness with flybacksCheck capacitor C120 2uF, 250V in first anode supply
Toshiba 217D98
Severe field distortionCheck capacitor C317 2.2uF, 50V in linearity feedback circuit
Mitsubishi CT29B2STX
Line output transistor s/c, repeated failureReplace the four caps in the power supply C905 470uF, 35V, C906 470uF, 50V, C909 2.2uF, 50V and C920 100uF, 25V also note transistor varies with different size c.r.t.
Zenith D32D51
Reddish pictureReplaced Transistor Q2005 Type 2N3906 shorted
Hinari CDTV2
Power supply fault, clicking noise, nothing elseCheck C629 100uF, 25v for o/c
Hitachi VT530E etc
Playback picture freezes repeatedly when warm / capstan motor overhaulThis symptom is usually due to contamination of the capstan motor bearing which can in turn lead to overheating of the drive chip, the problem can often be remedied by dismantalling the motor and thoroughly cleaning the bearing then lightly lubricating with a suitable light oil before reassembly
Goldstar CIT-9322
Volume down control on the set will not workEverything else worked fine on this rather old model except the volume down control i didn't have the handset to see if this was also the case via the remote. The cure was to replace the micro IC1 which was an M491BB1
Sharp 66FW53 widescreen DA-100 , 50 and 100Hz series
E/W faultCoil L603 part num RCILP0286BMZZ had severely burnt up and Q506 E/W driver 2SD2391 Part num RH-TX0151BMZZ was short circuit. If you have this fault check L604 for invisible dry joints, if you don't you may find you still have an E/W fault when you have replaced the faulty parts
Philips 14PV163
Reverts to standby from switch on via TV or VideoNo 5v rail because FET MTP3055 o/c. BUZ71 will do nicely
Toshiba Video Combi Model: VTV1402S
Dead, or intermittent start up. No voltage supply to line driverCheck R504 270k, feed to switching transistor. Goes high or o/c
Sanyo CBP2580
The word "factory" in a red box is permanently displayed on screen and sound volume goes from 0% to 50% to 100%Enter service mode, go down to nvm and press volume plus on remote
Goodmans 1476TS
Set reverts to standby at switch-onCheck 200v line on tube base for short cct. I901 TDA6103Q goes s/c
Vestel 6392
Field collapse no vertical deflection. No soundReplaced resistor R818 15k, 1w which was o/c. This resistor is the limiter for the 33v tuning voltage
Vestel 11AK19
Procedure to enter service modeGo to installation menu, then press 4,7,2,5