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Repair tips

Electronic appliance repair tips database - TV (LCD,TFT,Plasma,Digital), Monitor, VCR, DVD recorder and player, Digital camera, Audio equipment, Microwave ovens, Phone systems, Computer repair

MakeModelProblemSolutionDate
Found: 47
FergusonTX92 T78NDead with st/by led flashingCheck LOPTx & EEPROM X24C04 IR01 - damaged when fault occurred (if fault still present)14-09-04
GrundigST 70-755Grundig ST 70-755 TOP/LOG. Picture quality is great and TV turns on fine and displays picture fine for 1 - 2 hours. Then screen starts quick, short burts of flicker / flashes. (Picture can always be seen durring these flickers but is very anoying and obCheck electroylitics round frame output i.c. some of them are low in capacity24-06-05

GrundigST70-400Int start up & no R/C - no st/by lightR617 10k7 & R616 6k8 both 7w dry joints14-09-04
GrundigST70-775DPLNo pic via tuner or scart - unable to access menusRe - format eeprom ; On this set you do this by holding down P- as you switch on. This loads the emergency data set. If as on mine this appears to have no effect the set is probably also locked in hotel mode. To rectify this hold the i button on the remote whilst switching on. This will allow access to a limited service menu. Use the arrow keys to scroll down to Hotel Mode and switch it off, then scroll to the bottom of the menu and select end with mem and push ok. Switch off the set and power back up whilst holding the P- key and the eeprom will reformat. Switch off then back on again and select the menu system by pushing i then ok. Scroll down to service menu and push ok, on the next menu scroll down to service code and enter 8500. This brings up the full service menu and all adjustments can be made from there. Note the hardest thing to set is the afc which you select on the menu but adjust with coil 3025 inside the set. Basically if there is a directional arrow on the service menu under the afc setting you have to rotate the coil in that direction until the arrow disappears. In practice you have to go through this procedure but remembering to memorise all the settings (by selecting end with mem) about 4 times, switching off the set each time.14-09-04
GrundigST70755/9DPLNo sound & o/p IC getting hotCaused by momentary contacts on mains sw perm making14-09-04
GrundigT70-440Bright raster with fb linesTEA5101A RGB o/p chip on crt base & 10R in its supply14-09-04
MitsubishiC21T7BFine hor lines across screenIC951 TDA8171 FOP chip14-09-04
MITSUBISHIC21T7BFINE HORIZONTAL LINES ON SCREENREPLACE FRAME IC951 IC**TDA817114-09-04
NEIART701Field bounce when heatedHeight pot P302 int14-09-04
Philips25PT7106Wrong codenumbers are mentioned in Styling 261. PS 2000-2/3In Product Survey's 2000-2 and 2000-3, some wrong codenumbers are mentioned in Styling 261. See list below for the correct codenumbers: 6a* 3104 328 01612 Cabinet 6c* 3104 328 06051 Cabinet 6d* 3104 328 07142 Cabinet 11a* 3104 14-09-04
Philips28PT7106Wrong codenumbers are mentioned in Styling 261. PS 2000-2/3In Product Survey's 2000-2 and 2000-3, some wrong codenumbers are mentioned in Styling 261. See list below for the correct codenumbers: 6a* 3104 328 01612 Cabinet 6c* 3104 328 06051 Cabinet 6d* 3104 328 07142 Cabinet 11a* 3104 14-09-04
Philips28PT7306Wrong codenumbers are mentioned in Styling 261. PS 2000-2/3In Product Survey's 2000-2 and 2000-3, some wrong codenumbers are mentioned in Styling 261. See list below for the correct codenumbers: 6a* 3104 328 01612 Cabinet 6c* 3104 328 06051 Cabinet 6d* 3104 328 07142 Cabinet 11a* 3104 14-09-04
PhilipsGR2.4 29PT727BTripping with burning smell possibleTr7545 LOPTr s/c due to C2550 dry joint &/or o/c14-09-04
PhilipsMD 2.21 AA 28PT7303After replacing LOPTx set starts up with brief EHT then reverts to st/byFET on same heatsink as BU2520 is S/C 14-09-04
SanyoCPT7135Lack of width - blowing 2SD.Emiter/Base wires round the wrong way.14-09-04
SanyoCPT7135TRIPSC321 10uF OC14-09-04
SanyoCT7118East west.D601/2 , R626 , Q752 , R764.14-09-04
SEGCT7800 11AK19DeadIC802 TDA16846 & R867 o/c14-09-04
SegCT7800 11AK19Dead, st/by led blinkingNo o/p from psu, R867 0R33 safety res o/c for no apparent reason14-09-04
SEGCT7800 11AK19Field collapseD606 BA157 faulty tho measured ok14-09-04
SEGCT7951 G3 11AK19PDeadR817 5w 2R2 o/c, Q802 2SK2545 chopper Tr s/c, D805 BA159 & UF5407 diode14-09-04
SEGCT7951GB 11AK19ProNo line drive - LED turns from red to G OK at sw onApply 5v from bench psu to pin 40 of jungle ic IC401 (TDA8844) may result in a complete cure when next switched on. Internal diode on pin 40 goes leaky14-09-04

SonatelMR-T-750Field dist at bottomC610 100µ14-09-04
ThomsonTX92 28DT73HReverts to st/by aft few minsDry joints pins 1 & 2 LOPTx14-09-04
Toshiba214T7BDEAD STBY LIGHT GOES OUT WHEN REMOTE PRESSEDC815 .039uF14-09-04
Toshiba255R7B 255T7BDEAD Q404 SC.PIN 27 OF PLUG 570 DRY JOINTED14-09-04
Toshiba255T7BDead.Line transistor can use a S2000AF due to drys on LOPTX/Scan Plug.14-09-04
Toshiba255T7BINT LOSS OF COLC551 SUBCAIER ADJUSTMENT TRIMMER14-09-04
Toshiba255T7Bno sound or pic blank rastervid present at pin 6 vid sw chip QV01 but no further - supply to chip missing due to CV08 1000µ s/c & RV11 180R o/c14-09-04
Toshiba255T7BWill not go into StByQ803 2SC2023 Q804 2SA132114-09-04
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