The projector powered on and stayed on the first time I turned it on after shorting pins 1 & 2 out on IC102. I didn't have a lamp in it so I unplugged it and put a lamp in and tried it again, 2nd time it powered on for a bit, then went off again, and just pulses the standby light every second until I unplug it, which it is doing as a norm now.
Post by mastertech on Dec 14, 2016 20:59:30 GMT -5
Well that circuit monitors all the voltages the PS produces. Since all the voltages appear to be there and be correct according to your earlier tests then the circuit itself is not operating properly if shorting those pins cause it to work. Shorting those pins would send a correct signal to the controlling ic, which it appears it did. So it is possible something in the circuit that turns on that pc102 may be bad. But I would feel more comfortable if the projector did function. But since it is not and assuming the output voltages are still all correct then it is possible that whatever is causing this problem is also causing another problem . You say it keeps pulsing the standby light. Is the PS pulsing the output voltages also? Or are they ON? or OFF?
The voltages are on when the PS is pulsing, but the voltages do pulse a bit, for example: 5.3v drops to 5.1v every time it pulses, and its about the same difference for all the other voltages too, not a lot, but noticeable on the dmm by a few hundred millivolts
Before soldering the pins, when the PS would shut down, it would basically lose all power for about a second (no LEDs, nothing) then power back up into its standby sequence and then you could press power again and repeat the cycle.
Post by mastertech on Dec 15, 2016 13:27:20 GMT -5
I would start by testing for any shorted legs on ic202,Q201,Q202,Q203. If they seem to test normal then put pc102 back in, verify the unit shuts down and then remove ic202 and try again if it shuts down. This manual does not give part numbers so I do not know what ic202 is. See if it has any numbers before removing in case of damage.
MT, Checked all those, they don't appear to be shorted at all. So I put PC102 back onto the board, tried it out, still shutdown after powering it on. Then I pulled IC202 off the board (got it off nice and clean even ), and tried it out again without IC202 but having PC102 back in place, it also works this way, but there is a hissing sound coming from the PS (to be fair, there was the same sound when I pulled PC102 off the board and tried it)
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