jvc AV28SD4EK Repair Tips
Search: AV28SD4EK jvc
Results 5
Results 5
| Make | Model Ch. | Symptom | Problem Solution | Solution | By: |
|---|---|---|---|---|---|
| JVC | AV28SD4EK MXIV | No sound and all programs show the same channel | Check 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: | ||
| JVC | AV28SD4EK | Shuts down aft few secs | EEPROM faulty | ||
| JVC | AV28SD4EK | Service mode entering | press "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.zbv | ||
| JVC | AV28SD4EK | Dead, R526 burnt out C468/469 exploded | Replaced D521 BY228, D523 BYW95B R526, 39R D525 27v zener . | ||
| JVC | AV28SD4EK | Brief burst of power then dead | LOPTx |