So MT, as you probably know, I acquired this projector from crabb. I have it running right now, and its doing exactly the same thing as it was for crabb. I see the C board on it, and I'm ready to attempt the impossible
First things first before I hack it apart to get the board out. The ram chips, if they are bad (or the eeprom etc...) can they be ordered? I'm not paying sony $981 for a board that goes into a $500 machine, and im sure the C-board can be repaired.
So far while its running it has not glitched back to normal or anything, so I am suspecting a bad chip itself, and not solder contacts, bumping the projector around doesn't make the image change, and I did pull all the ribbon cables and re-seat them to eliminate the possibility of dust.
Seems to have a new lamp in it, its nice and bright, would make a great spare PJ if I can get this thing going!
I MAY have found a guy who parted his projector out because he couldn't find good looking plastics for it, I inquired about A-1186-985 C board and hope he replies saying he has it still. I will keep posted
Post by mastertech on Jul 25, 2014 11:16:23 GMT -5
If you do not get a replacement board and you feel adventuress you can try swapping those ram chips and see if something changes. Take a pic of some images before you do so you have something to compare to.
Okay, the new board is out for delivery today, so I decided to pull the bad C-board out, that was no easy task! Anyway, looking at the old board, it looks beautiful, as in, nothing visually appears to be fried, nothing even seems to have gotten hot.
I see the 2 big Sony IC's and 6 smaller Sony IC's, and there are 2 Etrontech IC's that look like memory chip ICs. I'm willing to bet that the issue is merely needing a reflow, since the lines in the display are quite a similar issue to faulty video cards I've seen that you could bend and the lines would go away. I haven't tried bending this board or any of that, since like I said, I'm pretty sure its just in need of a reflow.
Problem is, I do not have the equipment for a reflow, and I am hesitant to put this board in the oven, since its a bit more rare that a PC video card or motherboard.
I'm happy to report the Pearl is back in full working operation! The replacement board is working nicely, and I have the old one still so I can mess with it. It projects a great image, almost perfect. The only thing I can notice is the blue LCoS Panel is off to the right of the red & green by 1.2-1.5 pixels. Hardly much but I noticed it during an all white screen.
I have to admit, though not the most complicated digital I've worked on, its not as simple as many out there to work on, but it is doable with patience and a good memory
zjjxhzf: hello Gabor i am DLP projectorColor wheel is not accurate，setup memory， the phase angle cant setting for the color wheel ，must use service code.
Sept 19, 2017 1:31:25 GMT -5
mastertech: Hi stranger. Guess you spent your summer cruising on that street bike.
Sept 17, 2017 21:43:54 GMT -5
nashou: Hey everyone, just saying hi ! Hvent been here for a while hope you're all doing well !!
Sept 17, 2017 19:19:25 GMT -5
mastertech: Parts for repair are no longer available.
Sept 11, 2017 19:42:24 GMT -5
mayavi: my pioneer elite VSX-92TXH it freezes until I unplug and then it won't power on until maybe 10 minutes. came to know that its a common problem in this model. any help would be much appreciated......
Sept 11, 2017 13:39:10 GMT -5
jaredjaric: Thanks so much Hulio :), your expertise is very much respected
Aug 20, 2017 9:25:37 GMT -5
Admin: james: you need to post in the thread where your problem is being discussed.
Aug 9, 2017 19:51:54 GMT -5
james: Yes Sir All wiring was connected.
Aug 9, 2017 7:46:15 GMT -5
Admin: I have uploaded a copy of the SM to the digital projector section.
Jan 10, 2017 20:21:56 GMT -5
ducki: sorrry for my bad english ....(google translate
Jan 10, 2017 17:44:21 GMT -5
ducki: I have the same defect as a cp-x4021n you but can not start it ... I did the same trials with ic202 pc102 and still do not like, I make short pin 1 and 2 of the pc102 and PJ light (orange) goes off ... you can help me with a service manual for this PJ? TNX
Jan 10, 2017 17:43:46 GMT -5
jlb12: pwr switch off = 2(0.0) 3(11.7) 6(.04) 7(.04)
Dec 13, 2016 23:27:03 GMT -5
jlb12: No Problem. Thank you for all your help.
Dec 13, 2016 0:20:40 GMT -5