JVC TV Repair: Common Faults and Solutions.
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Results: 432
Results: 432
JVC Repair Guide: Common Issues and Fixes
| Brand | Model | Fault | Detailed Problem | Solution | By |
|---|---|---|---|---|---|
| JVC | AV25F1EK | Lack of width with foldover | Check for dry joints in line stage | ||
| JVC | AV25F1EK | Int sigs & other int functs | Dry joints ic522 | ||
| JVC | AV25F1EK | Int shut down | Opto coupler cnx92a & 2sc1815 | ||
| JVC | AV25F1EK | Geometry of pic out | Ic561 tda8145 | ||
| JVC | AV25F1EK | Dead - led blinks on once at sw on | Loptx faulty | ||
| JVC | AV25F1EK | Blank raster aft 45 mins | Field chip tda3654 - s/castle pulse dist thus blanking pic with full invisible raster | ||
| JVC | AV25F1 JX | Dead | Q001 sgsif444 chopper tr s/c, ic001 tea2261, cnx82a opto also replaced to prevent repeats | ||
| JVC | AV25F1 | Int dead | Dry joint between lie dr base & video/chroma board | ||
| JVC | AV25F1 | Field collapse & no sound | Dry joints regs ic 521 and 522 | ||
| JVC | AV24WTSEKS | Dull pic, poor contrast | Check if "eco" mode has been set - press the i "information button and mute button at the same time to enter the service mode. choosing 6 (picture settings) from the vsm menu you can set up the contrast and brilliance settings etc in all the preset modes that this set offers (ei warm, cool, normal etc) | ||
| JVC | AV24WT5EKS JK11 | Blank white raster at startup - reverts to st/by after 5 seconds | The +5v supply low - replace 5v reg ic954 ba05t - used l7805cp in lieu | ||
| JVC | AV21TS2EK | Int flashing across screen | Crt faulty | ||
| JVC | AV21TS2EK | Green line down the side of pic | Tb1227an ic101 jungle chip u/s | ||
| JVC | AV21TS2EK | Field lock in wrong place | Tb1227an ic101 jungle chip u/s | ||
| JVC | AV21TS1EK | No sound nicam or fm - if txt selected header appears for 1 sec then reverts to pic | R619 sm not soldered properly | ||
| JVC | AV21TS1EK | Lack of height aft 10 mins | Tda8351 & check fr552 0r82 2w, fr553 tda8351 is at fault. check the supplies lines at this ic. pin 6 should be 47.3v and pin 3 should be 14.9v. if this is incorrect check resistors fr552 0r82 2w part no qrh027k-r82m. and resistor fr553 6r8 1/2w part no qrh127j-6r8m. these resistors are at pins 8 and 7 of the loptx. | ||
| JVC | AV21SXLEK | High pitched buzz - sound/pic ok | L521 line lin coil vibrating - could also be loptx | ||
| JVC | AV21SX1EK | Field - partial collapse - int | Dry joint c961 2200ยต 25v ; 8v smoother | ||
| JVC | AV21SX1 | No sound | Only 3.5v supply to dolby pcb - should be 5v - ic952 lm7805 reg | ||
| JVC | AV21S2EK | "nicam" randomly appears on screen | Replace sf012 (blue) on nicam pcb |