Make | Model | Problem | Solution | Date |
| | | |
Found: 16
|
JVC | AV25GS1EK & AV25S1EK etc | Dead - HT starts to rise then decays | D521 BY228 in EW cct | 14-09-04 |
JVC | AV25S1EK | At sw on LED red then green, red then out - dead | C468 (4u7F 50v) blown its top and R526 (39R 0.5w)burnt also D521 (BY228) s/c | 14-09-04 |
JVC | AV25S1EK | Dead or int dead - front LED operates ok & HT/LT readings ok | Check R903 & 904 2k2 & dry joints on st/by trs Q902 & 901 near them | 14-09-04 |
JVC | AV25S1EK | DIM PIC | C1206 LEAKY 3.3mfd | 14-09-04 |
JVC | AV25S1EK | Dim pic with green tint | No volts at IC201 contrast control pin as C1206 3µ3 leaky | 14-09-04 |
JVC | AV25S1EK | Field collapse | TDA3654 FOP chip | 14-09-04 |
JVC | AV25S1EK | FRAME COLLAPSE | REPLACE FRAME IC TDA3654 | 14-09-04 |
JVC | AV25S1EK | LED COMES ON AND THEN GOES RED THEN OFF | CHECK FOR S/C E/W STAGE R526, C458 AND D521 39 OHM, 4.7MFD50V AND BY228 | 14-09-04 |
JVC | AV25S1EK | Led goes red, then green then off at sw on - no start | R526 39R, C458 4µ7 50v & D521 BY228 in E/W cct | 14-09-04 |
JVC | AV25S1EK | NO LINE DRIVE | R903 2.2k BASE BIAS TO Q902 SLIGHTLY HIGH | 14-09-04 |
|
JVC | AV25S1EK | Shuts down at sw on | D521 BY228 s/c, C468 47µ, R526 0R22? | 14-09-04 |
JVC | AV25S1EK | Shuts down immediately after sw on | D521 BY228 s/c, C468 47µ , R526 0R2 | 14-09-04 |
JVC | AV25S1EK Mk2 | Always comes on in st/by - sometimes at full vol | EEPROM IC104 corrupt - pt no CAT93C66P | 14-09-04 |
JVC | AV25S1EK MXII | Unstable pic with line jitter | Video o/p from IF module has ragged sync pulses - 1µ elect cap in AGC feed | 14-09-04 |
JVC | AV28S1EK AV25S1EK MX2 | St/by light changes col but no line drive | No supply to line dr tfmr as R903 2k2 hi res (switches st/by tr Q902) | 14-09-04 |
JVC | AV28S1EK AV25S1EK MX2 | Width & E-W faulty | Replaced memory chip for electronic screwdriver - 24C01A/P IC1707 | 14-09-04 |