datasheet,schematic,electronic components, service manual,repairs,tv,monitor,service menu,pcb design
Schematics 4 Free
Service manuals, schematics, documentation, programs, electronics, hobby ....


registersend pass
Bulgarian - schematics repairs service manuals SearchBrowseUploadWanted

DatasheetsChassis2modelRepair tipsFulltext searchCables & Connectors
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: 93
AkuraCX25 etcInt no pic, one col etcDry joints on earth links on component side of pcb - remove ics to repair14-09-04
AlbaSsangyong ETC. CDEAD ZD401 12v ZENER SC R414 12R 2W OC LOP TR SCCHECK HT SHOULD BE 114v CHECK ALL POWER SUPPLY CAPACITORS , ZENERS AND SOLDERING14-09-04

Bush2028T (11AK10) etcStandby is initiated when "Vol +" or "Vol -" selectedCorrupted memory IC502 - password reqd when replacing which requires a procedure too long to list here. See Serge's email on subject dated 26/10/00 14-09-04
BushSsangyong etc.DEAD ZD401 12v ZENER SC R414 12R 2W OC LOP TR SCCHECK HT SHOULD BE 114v CHECK ALL POWER SUPPLY CAPACITORS , ZENERS AND SOLDERING14-09-04
Ferguson21CB25UT etcParent Lockholding the standby button down for 4 seconds & hide the remote from the kiddies. The set can be turned on again only with the handset.14-09-04
Ferguson21CB25UT etcTo display the menupress PR-(Program minus), stop & on/off buttons on the set (Not the remote). Adjust using arrow buttons & then press Exit to quit menu.14-09-04
GoldstarCI21A80 etcWon't come on from st/byMay be in child lock - use r/c to sw on14-09-04
GoldstarCIT2168F CIT2190F etcNo sound - pic ok - sw to st/by aft 10 minsPin 7 IC401 TDA1940 produces muting o/p - chip u/s. Fit 1k res in place of J8 link14-09-04
GoldstarCIT2191 EtcDEAD 330v SUPPLY OKC805 100uF 16v CHOPPER COUPLER OC14-09-04
Goodmans1408 etcField collapseNo 33v from psu - IV04 33v zener14-09-04
Goodmans1430R etcLow gain when tuner replacedFit 27R res between pin 8 & 9 of IC pins adj to tuner14-09-04
Goodmans2055T etcNo st/bySt/by control line shorted to ground - cut link JP01 near IR Rx conn PV0114-09-04
Goodmans2170/2175 etcLOPTr Q210 has short life - High EHT & Focus voltsC264 47µ 160v (C434 in TV14RC)14-09-04
GrundigSE7086TOP etcint no sound - when increased gives popping noiseMains sw st/by contacts int14-09-04
HitachiC1714T etcField o/p chip repeatedly failsReplace ic 601. get two 33v Zener diodes and connect them in series ( BZX79C33V) connect the anode to pin 1 of ic601 cathode to pin 2 of ic 601. Fit 10nF 50v capacitor across the frame scan plug E701 on print side of the plug. If the ic still blows after this mod. a new CRT is required. The tube is flashing over. This applies to all sizes of 14T/TE range of sets14-09-04
HitachiC2146 etc"C46TN" displayed - in factory set up modePress the 2 VCR buttons on hset together - when the menu appears go to st/by14-09-04
HitachiC2146 etcField - lines at top of picIC601 field chip14-09-04
HitachiC2146TN etcNo soundTDA7263 Audio o/p chip14-09-04
HitachiC2146TN etcTrips soon aft sw onDry joints R719/716 (LH rear of LOPTx)- hard to access, also check R905 0R5 or 2x 1R in Parallel14-09-04
HitachiC2156 - C32WD2 &tcInt goes to st/byVR951 +B HT preset 1k goes int or microphonic14-09-04
HitachiC2565TN, C2574TN etcTrips under certain pic conditions & on VCR playbackR952 68k, R953 82k, R954 8k2 & check for dry joints14-09-04
HitachiC28300,C2576TN etc A5 chassisField lin & lines at top of picC725 33nF 400v14-09-04

HitachiC28300,C2576TN etc A5 chassisInt trips & linesC719 4µ7 250v smoothing cap for 200v in E-W corr & check joints T702 (under plastic strut) & R950 68k near HT pot14-09-04
HitachiC28300,C2576TN etc A5 chassisRed pic with fb linesR829 fusible on crt base o/c (not shown on cct diag)14-09-04
HitachiG10Q C2564 etcRepeated failure of E/W diode D704 BY228 which causes tripping & blowing fuse F902Also replace Q651 BU801 pt no T636046 & Q652 BC548B, L651 filter coil pt no 2220642 (goes shorted turns)14-09-04
JVCAV25GS1EK & AV25S1EK etcDead - HT starts to rise then decaysD521 BY228 in EW cct14-09-04
LGCF28C22F etcField collapseFit mod kit KITPC33J (7 parts inc)14-09-04
MitsubishiCT21A2STX etcDead - LOPTr Q522 s/cC905 (470µF, 35V), C906 (47µF, 50V), C909 (2.2µF, 50V) and C920 (100µF, 25V).Note that the transistor type varies with screen size, With a 21in. tube it's type 2SD1877, part no, 260P606010; with a 25in, tube it's type 2SD1878 (part no, 260P607010) while with a 29in. CRT it's type 2SD1879 (part no. 260P608010), 14-09-04
MitsubishiCT29AS1TX etcTxt break thro' or black square in centre of screenC958, 956 2200µ 16v & check C952, 974 & 97314-09-04
NEI2031 etc.BUZZ ON SOUNDCHECK 22nf CERAMIC CAPS AT ONE END OF IC.14-09-04
page: 1 2 3 4
 FB -  Links -  Info / Contacts -  Forum -   Last SM download : Oltronix C28-10R

script execution: 0.20 s