| Author | Message | ||
     Mareklew Tinkerer Username: Mareklew Post Number: 258 Registered: 03-2010 Rating: N/A |
"I could open the flash up and apply 6V DC directly to the capacitor contacts and see if that might work." Trust me on this one: if applying 6V to the HV-rated cap was to make any difference to it, then the cap is beyond salvation already. That's my point really. From what you wrote there's something else wrong, or the cap is properly dead (not just de-formed). It might be the tube failing, it might be a contact problem (if so, then I'd suspect the wires going from cap to tube being internally broken and hanging together on an odd thread of copper), the cap being damaged (internal connections severed) or dried-up (age, lack of use and elevated temperatures), or the control-IGBT has slight internal delamination or severed bondwires, or there's some sensor that's bad (resistor divider that reports the cap voltage, lamp current sensor if any, desat detection circuit - if present)... In any way it's not a trivial task to troubleshoot the circuit and once the culprit was found - to fix it. I'd try to return the unit as it's faulty. Marek |