Got this broken AX100 a while ago and did some troubleshooting with it.
Condition is as follows:
Unit wont fire the lamp (fans ok, green power led and LCDs show picture when checked with another light source) and P-module gives 384 and 14VDC to ballast so it should be ok so quite likely the problem is in the ballast. If I disconnect the Q-module from mainboard, the unit gives lamp fault indication. Ballast part number is TNPA4048 but I think the replacement part is TXANP02VKD3. Price of new ballast here is around 150€, which is way too much for old unit like this especially when there's no quarantee that it's the only broken part.
Does anyone have any tips how I could get the lamp lit cheaper? I'm not a guru with electronics but did some measuring and motherboard seems to give the 'lamp on' signal just fine but gates of Q9603/Q9614 are not getting anything, so first I tried to jump the source and drain which just made the unit whine like a bitch as it should operate as a chopper anyway and those fets are high freq ones and have no idea what freq they should operate.
So any hints what to try are welcome. I have nothing to lose. Ways to try to force the ballast on / cheaper replacement parts / places to find broken units to steal a working OEM part or anything.
Thanks in advance.
E: forgot to attach the schema
Condition is as follows:
Unit wont fire the lamp (fans ok, green power led and LCDs show picture when checked with another light source) and P-module gives 384 and 14VDC to ballast so it should be ok so quite likely the problem is in the ballast. If I disconnect the Q-module from mainboard, the unit gives lamp fault indication. Ballast part number is TNPA4048 but I think the replacement part is TXANP02VKD3. Price of new ballast here is around 150€, which is way too much for old unit like this especially when there's no quarantee that it's the only broken part.
Does anyone have any tips how I could get the lamp lit cheaper? I'm not a guru with electronics but did some measuring and motherboard seems to give the 'lamp on' signal just fine but gates of Q9603/Q9614 are not getting anything, so first I tried to jump the source and drain which just made the unit whine like a bitch as it should operate as a chopper anyway and those fets are high freq ones and have no idea what freq they should operate.
So any hints what to try are welcome. I have nothing to lose. Ways to try to force the ballast on / cheaper replacement parts / places to find broken units to steal a working OEM part or anything.
Thanks in advance.
E: forgot to attach the schema
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The ballast unit together with the power supply, including the PF correction system are safety critical units and repairs should not be attempted just replace the faulty items.
To advise anything else is reckless!
To advise anything else is reckless!
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