Deleted
Deleted Member
Posts: 0
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Post by Deleted on Jul 4, 2015 8:01:58 GMT -5
The max does operate without the wired remote. The led on my wired remote was blinking now and than so I disconnected. No problem.
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Post by dummyload on Jul 4, 2015 8:58:22 GMT -5
He already tried an oder smps and the main supply and pcf starts up and thats not possible without ++9v.
Even with degrading ++9v the backlight should light up on the remote.
Decibel first check if the ++9v from the smps subboard is presence at your remote and controller .
Disconnect the internal remote see if something changes as case already suggested ,and try to measure if the++9v is present
at the connector on the motherboard if its there your remote is dead or a wire is open circuit ,if not your remote and possible the controller are missing this vital supply .(you can remove hv board for now,as i already suggested so that your tubes are you not get killed while testing this ,its not so easy to access the internal remote connector)
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Post by dummyload on Jul 4, 2015 9:30:46 GMT -5
You also can do basic test of your internal remote also by disconnecting it and put a 9v batterie and put it at the the connector through the wires of a resistor (or something fitting in there) pin 4 - batterie and pin2 + batterie ,i just tested this myself and it works this safer than going in the projector and making unintentional shorts.
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Post by Decibel on Jul 5, 2015 3:37:09 GMT -5
You also can do basic test of your internal remote also by disconnecting it and put a 9v batterie and put it at the the connector through the wires of a resistor (or something fitting in there) pin 4 - batterie and pin2 + batterie ,i just tested this myself and it works this safer than going in the projector and making unintentional shorts. I have put an extra cable from motherboard in internal remote connector. There's 2.5/3.0v at pin.  |
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Post by Decibel on Jul 5, 2015 3:38:48 GMT -5
How check ++9v?
Can I put an extra cable to smps sub board (pin10)?
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Post by dummyload on Jul 5, 2015 4:15:29 GMT -5
If you mean pin10 from connectorj200 on subboard smps than yes.
Are you shore this is pin 2 of remote connector? This is measured without remote? Pull out the tray with controller board and remove hv board and do same measurement see if it`s the same.
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Post by Decibel on Jul 5, 2015 4:24:38 GMT -5
I disconnected cable from connector of motherboard and inserted extra cable.
So the internal remote was completely disconnected.
This evening I'll try pulling controller tray (and removing HV board).
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Post by dummyload on Jul 5, 2015 4:28:04 GMT -5
Also do you still have the other smps to see if you have same reading. So possibility now is two bad smps or something is overloading the++9v , with above test you can know if it`s the controller board.
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Post by mastertech on Jul 5, 2015 10:43:13 GMT -5
You need to go right to the controller board to SR4 and test for your ++9v. If you cannot test it with it installed and running then you need to solder a piece of wire to it and extend it to the outside of the projector so you can test on it. If your ++9v is low then you need to remove SR4 and retest, making sure your solder wire is on the incoming pad from the SMPS to see if it comes up to the required voltage. This will tell you if it is the SMPS or on the controller.
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Post by Decibel on Jul 5, 2015 12:47:25 GMT -5
You need to go right to the controller board to SR4 and test for your ++9v. If you cannot test it with it installed and running then you need to solder a piece of wire to it and extend it to the outside of the projector so you can test on it. If your ++9v is low then you need to remove SR4 and retest, making sure your solder wire is on the incoming pad from the SMPS to see if it comes up to the required voltage. This will tell you if it is the SMPS or on the controller. I just tested the voltage at pin SR4. Seems there is only 2.8v. |
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Post by Decibel on Jul 5, 2015 13:27:25 GMT -5
I just realized that the in the SMPS sub board result totally missing cap C604 100uF 50v how is possible?  |
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Post by mastertech on Jul 5, 2015 13:31:27 GMT -5
You need to go right to the controller board to SR4 and test for your ++9v. If you cannot test it with it installed and running then you need to solder a piece of wire to it and extend it to the outside of the projector so you can test on it. If your ++9v is low then you need to remove SR4 and retest, making sure your solder wire is on the incoming pad from the SMPS to see if it comes up to the required voltage. This will tell you if it is the SMPS or on the controller. I just tested the voltage at pin SR4. Seems there is only 2.8v. See! On the first page in this thread I said you needed to check these rail voltages. Oh well, you got some more experience anyways. Fix that cap problem and test again. If still low then remove that SR4 and test again to know where to go next. |
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Post by mastertech on Jul 5, 2015 13:35:59 GMT -5
I just realized that the in the SMPS sub board result totally missing cap C604 100uF 50v how is possible? C604 appears to be for the filament voltage regulation and should not affect the ++9v. It would probably run fine with out it. |
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Post by Decibel on Jul 5, 2015 13:41:19 GMT -5
I found two versions of sub board.
In one of these the cap C604 there isn't.
However it is in filament voltage regulator section.
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Post by Decibel on Jul 5, 2015 13:52:21 GMT -5
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