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: 355
JVCAV25TS2EKCrackling on sound at sw on until warmSAWF SF012 - fit improved type CE42606-T0114-09-04
JVCAV25VM1St/by onlyIC951 KIA7808P 8v reg also replaced Q953 2SA966 & Q954 2PC181514-09-04

JVCAV25VM1 JABlank raster with fb lines & top crampingFOP IC TDA8350 14-09-04
JVCAV25VM1EKField to & bottom crampIC401 Field/EW chip TDA8350Q14-09-04
JVCAV25VM1EKSt/by only & no line driveTDA8366 jungle chip IC101 pin 35 8v supply missing as IC951 8v reg faulty KIA7808PI14-09-04
JVCAV28F1EGFlyback lines at top of picDry joints FOP chip14-09-04
JVCAV28F1EGInt line sync/ col/pic break up from coldBlanket solder signals board14-09-04
JVCAV28F1EKINT LOSS OF SOUND AND PICTUREAGC PRESET INT OC14-09-04
JVCAV28F1EKNO NICAM LEDD102 DRY ( GREEN LED )14-09-04
JVCAV28F1EKNO SOUNDICP ON AUDIO SUB - PCB ( CHECK 12V ON R911 )14-09-04
JVCAV28F1EKPic/sound int disappears to blank rasterAGC preset dry jointed14-09-04
JVCAV28F1EK JXInt reverts to st/bycheck for dry joints on regs IC521/52214-09-04
JVCAV28GS1EKElectronic screwdrivervsm >-< and the display button (the one above the menu botton left of the mute button) brought up the electronic screwdriver for height and vert posn14-09-04
JVCAV28S1EKHour Glass effectReplace both memory chips14-09-04
JVCAV28S1EK AV25S1EK MX2St/by light changes col but no line driveNo supply to line dr tfmr as R903 2k2 hi res (switches st/by tr Q902)14-09-04
JVCAV28S1EK AV25S1EK MX2Width & E-W faultyReplaced memory chip for electronic screwdriver - 24C01A/P IC170714-09-04
JVCAV28S4EKField collapsechange micro MN15245. Waveform on pin 25 too low amplitude14-09-04
JVCAV28SD4EKBrief burst of power then deadLOPTx14-09-04
JVCAV28SD4EKDead, R526 burnt out C468/469 explodedReplaced D521 BY228, D523 BYW95B R526, 39R D525 27v zener .14-09-04
JVCAV28SD4EKService mode enteringpress "DISPLAY" and "VSN Standard" together & note settings While still in the service mode, press "Display" and "VSN Standard" again to enter the system constants menu. Now write down all the settings in the system constants menu. Press EXIT twice to return to the normal screen. Switch the set off and replace the EEPROMs with a new ones. Then go back to the service/system menu and enter all the data what you have written down. After all the items have been set, press "OK" to store.zbv14-09-04
JVCAV28SD4EKShuts down aft few secsEEPROM faulty14-09-04
JVCAV28SD4EK MXIVNo sound and all programs show the same channelCheck the data lines on pins 14 and 13 of the connector CNO13 on the sound subboard. If they are low, disconnect the lines one by one from all the chips until the correct level is restored (about 4 V p-p). Also check IC001 5V regulator for DJs, as this could be the culprit. In this case all 3 chips on the sound board had leaky data line inputs:14-09-04

JVCAV28WFR1EK JKNarrow raster then turns offC521 Flyback tunning cap o/c Can also cause failure of Q543 D521 Q521 Q545 Q544 14-09-04
JVCAV28WFR1EK JKWidth reduced & int tripC521 3.5nF 1.5kv line tuning cap - JVC replacement better quality14-09-04
JVCAV28WFT1EKSReverts to st/by aft pic appears with lack of width at sw onC521 2nF 1.5kv tuning cap breakdown - pt no QFZ0196-20214-09-04
JVCAV28WR2EKService mode enteringpress "i" & mute buttons together, select "2" for cut-off adjusts, correct setting with function +/- keys & store with menu button.14-09-04
JVCAV28WR2EKTo access service menuPress the information "I" key and the mute key on the remote simultaneously.You then use the numbered keys to select the relevant submenu. Option 2 "V/C" is used to greyscale, for the cut offs and drives you use the numbered keys to alter the values eg. Red cut off, 4 to increase, 7 to decrease. Green cut off, 5 to increase, 8 to decrease. Blue cut off, 6 to increase, 9 to decrease etc.14-09-04
JVCAV28WR2EK JFDeadCP953 N50 prot o/c, D965 BYD33D-T3 s/c in psu14-09-04
JVCAV28WR4EKCrackle on sound oc Sky dig via scart - ok on RFAudio o/p of dig Rx set too high - enter system set up in Menu & adj/store vol in audio menu14-09-04
JVCAV28WR4EKPic shifted to right in all modes - may be intLoss of hor fback pulses to IC101 due to Q501 2SC1815 s/c14-09-04
page: 1 2 3 4 5 6 7 8 9 10 11 12
 FB -  Links -  Info / Contacts -  Forum -   Last SM download : Bose AM30P

script execution: 0.12 s