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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: 31
AkaiTV3451 Stereo+2DeadVO1014-09-04
B & OTeletext 33XXDisplay - no OSG - teletext on 100.Chip 8IC1 ( 4015 )14-09-04
Bush6690 VestecNo vol/chan change or menu functions in analogue functions. Digi tuner works OKReset remote handset by pressing Left/Right/ Down cursor keys & No 1 button together and holding for 5 secs. Note if fault does not clear suspect micro IC.14-09-04
DaewooDTE28G7GB CP785No sound/pic - psu & line drive okTDA8385J FOP chip faulty14-09-04
FinlandiaC/D66KZ6/F Eurostereo CHA2stuck in st/by, if you try to switch it on, chan 1 appears in display for 5 secs then reverts back to st/by with green led flashing on front.line driver transistor faulty 14-09-04
HitachiC1714TE (A15 chassis)No Txt & delay in returning to st/byCheck 5v supply pin 44 micro - if low ZD4001 5v1 zener is sus14-09-04
HitachiC1714TE (A15 chassis)To acess service menupress the following buttons on the remote: 4 4 STATUS MUTE TV in that order and fairly quickly. The service menu is displayed. Check that BYTE 1 = 7D; BYTE 2 = 20 These are two hex digits - to exit menu press st/by14-09-04
HitachiC2133TN StereoDEAD , JUST SBY LIGHTNO 12v TO TEA2164 IC - VEO7 ( BC858 ) S/C. FRONT PANEL14-09-04
HitachiC2514TEDead - no st/by LEDNo 5v rail - check R097 82R & Q003 BC548 - either 1 or other fitted14-09-04
HitachiC2514TESt/by only aft trying to startReplace IC601 TA8427K C604 100UF/63V O/C and 100UF/63V that is soldered directly to the pins (print side) of IC601.This one was high ESR14-09-04

HitachiC2514TEWeak vid/hiss only in AV mode OK in normalQ005/007 2SC3413 rh of scart skt faulty14-09-04
HitachiCP2514TE Issue 7CService mode accessIf the set has 3 pins close to the earom 24c04 then short pins 1 & 2 or 2&3 .14-09-04
HitachiCT2114TEInt goes to st/by with HT present & fop okAlso int txt corrupt & 9v start up - SAA5296P/015 µ faulty14-09-04
ITTEuro Stereo2S2000AF line o/p tr int goes s/c; line dr tr goes o/cline driver tfmr14-09-04
ITTLATE SLIM SlimlineWONT ALWAYS START , COMES ON WHEN WARMCHECK 4.7mfd 400v POWER14-09-04
JVCCT14ETE1K OnwaPSU blownReplace - R 915 39R 7WATT; R914 0.33R 2WATT; R902 2.2 3WATT; R901 4R7 5WATT; R911 12R 1WATT; R912 27R 2WATT; R913 22OK 1WATT; Q903 2SC1815; Q901 2SC1815; Q902 2SB744; Q904 2SD1545 OR 2SD2498; ZD901 8V2; ZD902 9V1; D901,902,903 all BA 157's; C902 .0022MFD 2KV ? (originally .0022MFD but updated to .0039MFD)This cap was blackened & seems to have been the route cause of the blown up.14-09-04
KyotoK/MTE9014Overloading and unstable picture and muted soundReplaced C116 on Pin 18 of TDA4505E a .47uf14-09-04
Nokia5156 Stereo PlusNo sound or just faint noiseDis pins 7 & 9 at Nicam module. If sound returns VA60 BC857 & VA61 BC847 are sus (mute trs )14-09-04
Nokia6365UK Stereo PlusField - top foldoverTDA83550Q FOP chip14-09-04
NokiaEuro StereoDead - EHT presentI2C bus failure - check 5v supply & SCL, SDA lines. If low remove NICAM pcb. If then works sus MSP2400 chip14-09-04
NokiaEuro Stereo 2Dead - 2 dashes in led display onlyT507, BC337 leaky, off of pin 6 of the HOR.PULSE TRANSFORMER14-09-04
NokiaEurostereoRagged verts & screaming chopper tfmrC787 10µ 50v14-09-04
NokiaEuroStereo2Int reverts to st/by / width / line freq / lop tr failureLine dr tr T507 BC337-25 faulty (may check ok) & replace C507 220µ decoupler for line dr tfmr14-09-04
NokiaStereo plusInt line tearing/jumpingPic moves to right as set warms up ; VK16 BC858 sm was int14-09-04
NokiaStereo plusReverts to st/by aft few minsV071 BC858B sm in psu control14-09-04
NokiaStereo Plus2" band of line at centre of screenTDA8350Q field/EW chip NS1014-09-04
NokiaStereo PlusField top foldoverRK68 10R 42v supply to pin 8 of FOP chip hi res14-09-04
PioneerElite VSX-27TXPioneer Elite VSX-27TX. However, most of the time I can't get any sound. Now and then afer 15 to 20 minutes of leaving it on it comes to live.There probably are some dry solder joints or bad cable connections in this amplifier. Just switch on the amp, and gentley tap on the chassis with an isolated screwdriver. If the sound "jumps" back on, there almost certainly is a bad solder joint / connection. 19-07-05
Protech5131NT VestelNo pic - sound okPoor washed out pic appeared when A1s advanced - TDA6107Q RGB O/P chip on CRT base14-09-04
Salora21N6U Eurostereo 1Trips with high HTR748 100k monitoring volts supply hi res14-09-04
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