CurtPalme.com Home Theater Forum

[bluemoonhu]

Parameters of D37？I will buy it. thanks!

[bluemoonhu]

Parameters of D37----B1045

[Hulio]

No. Looking at the schematics, the only components connected with F13 fuse are D37, C81, C82 and L23 (coil L23 in unlikely to fail).
Send me a PM with your e-mail address and I will send you the schematics of the power supply if you wish.

[Hulio]

That's the one. Search for MBR1045 Schottky Rectifier Diode

[Hulio]

By the way, don't look at the value when measuring. Just dial the multimeter to diode reading and check the continuity.
The diode should act like a valve, allowing the current in one way only. So you get a beep in one way, and no beep when reversing the measuring probes. If you get on both ways a beep, or on both ways no beep, the diode is shortened and must be changed.

[bluemoonhu]

[bluemoonhu]

[bluemoonhu]

[bluemoonhu]

If there is no problem with D37, which components associated with it will have problems。Should I check the components associated with D37 first?

[Hulio]

You already did, you said that C81 and C82 were ok. However, to properly check the capacitance, the capacitors should be taken out of the circuit. And as I mentioned, inductor L23 is unlikely to fail. But you may check the continuity of it, just like you do it for a fuse.
See schematics in your mailbox

[bluemoonhu]

A new MBR1045 is installed on D37，the measured value is normal.

[bluemoonhu]

After start up, the f13 fuse and the MBR1045 of D37 are burned out again.which indicates that other parts are faulty、Is it the deflection board that caused them to burn out? because a good 708 deflection board was burned when it was installed on the C7 and then reinstalled in the 708 machine, a fuse and a b229 diode in the good 708 power board were burned too. I don't know the connection between the deflection and the power board? or can other boards cause the power board to burn?

[Hulio]

Like I said, the deflection board from a V708 projector is not compatible with Cine 7. Even they look the same, they have different part numbers (R762447 vs R7627625).
In the schematics I sent you, you can see the connections between the deflection board and power supply (J62 and J760 from power supply goes to J7 and J14 on the deflection board). Check if all connectors are properly placed and there are not bended pins.
Also, check if the power supply is the original one that belongs to the projector. Every board in the projector have a sticker with a serial number (not the one with the Rxxxxxx number). This should match the serial number of the projector (seen on the plastic case).
Another point of attention: your model does not have a PFC (120V-220V auto sensing). Check if the white jumper on the power supply is manually set to 220V. If the machine comes from US and the jumper is still set on 110V, is not good.
I strongly believe that somewhere a connection is not right, causing blown fuses.
However, let me know if you wish to buy the SMPS and deflection board from the German e-bay. As you know, the guy doesn't ship to China, but I'm willing to buy them and send them to you.

[bluemoonhu]

yes, the SMPS board and RGB board are not original，but they are from C7。The power supply is 100-240V。

[Hulio]

All projectors have a 110-240V capable power supply. What i meant is that some models have an auto-range one. Barco calls it PFC (Power factor Corrector), something your model does not have. You have to manualy switch that jumper (next to those 2 main fuses) to 220V.

[bluemoonhu]

I don't know whether such a connection mode can obtain 220V？

[Hulio]

That white connector in front of the fuses, with thick grey wire on it. Must be with the text "220V" on it facing upwards.

[bluemoonhu]

Is it reversed？

[Hulio]

Yep, J700 is the one. It is already in the right position, I see 👍

[bluemoonhu]

I checked the connectors and found no problem. I don't know why the F13 fuse burned out？