For those of you who have the Dell 1800mp DLP projectors and are having the issue of it either having erratic flashing LEDs and no power, or no power at all, here is the fix for them.
The power supply board in these projectors has one 3300uf 10v capacitor made by OST (aka really cheap crap). In fact, this is the only completely cheap knock off capacitor in the entire unit. This capacitor usually domes or bulges on the top causing the capacitance to drastically drop and therefore prevent the projector from powering on normally.
This capacitor must be replaced with a new high quality low ESR capacitor. I prefer nichicon capacitors as they are highly reliable and usually used in very high quality equipment. Once the capacitor is replaced with the new one, and the projector is fully reassembled, the projector should be ready to test. Please ensure your bulb and lamp cover are attached so the projector will power up.
Plug the projector in, and you should see the lamp and power LED flicker for a split second, after that the power LED should begin flashing blue on and off in 1 second intervals. Power up the projector, it should power up and ignite the lamp. Your projector should now be operating normally.
Post by lcfrederico on Jul 8, 2018 22:58:06 GMT -5
We did the replacement and it works like magic! ;-) here you go: photos.app.goo.gl/kuy194iQL1F5ejBR8 link Dell 1800MP projector bad cap replacement (at about 2 hours of labor) And please remember that without the lamp cover, as a safe measure, the projector doesn’t turn on! (We just figure it out after almost disassembly it all over again! ;-)
analogrocks: Those are pretty pictures! Set one up running a ps1 or NES and sell them as retro gaming projectors. OR post them to me. Just put the stamps in the corner. Should make it just fine
Aug 28, 2020 16:28:01 GMT -5
iwwy1969: Hi all. Nice forum. I have Onkyo TX-NR616 no sound and no usb access. I have 5v at usb. I found that oscillator close to DSP is not working. It has no voltage feed from DSP. During the testing through display DSP shows version D??? .
Jul 13, 2020 8:25:33 GMT -5
lfcfan: Hi Todd, have been reading endlessly about the topic, and I really don't think that I'll be capable to 1. do the job myself as I don't have enough of the right equipment, and it looks like only the people who have access to TI exclusive distribution networ
Apr 9, 2020 17:17:06 GMT -5
skydronelink: Thank you I advance
Jan 29, 2020 4:01:41 GMT -5
skydronelink: Hi Repairaj, I have the same issue, but I am not able to get the cap value, I can tell it is the same board but deffirent rev cause of the side CAP is not the same value ! any idea how I can get the right burnt cap value?
Jan 29, 2020 4:01:31 GMT -5
skydronelink: Hello Jerme, thank you for the those images, is there is any chance to get the C2 (Cap) value or an image for it ? Thank you in advance.
Jan 27, 2020 23:15:06 GMT -5
skydronelink: Hello Sergio, I have the same issue, but I am not able to get the cap value, did find out what is the cap value?
Jan 26, 2020 18:01:17 GMT -5