Power cable is good and so is power supply tried in other sockets. Not getting even a stby light. Please help.
Ryan Stallwood
Ok - So i finally located the problem for the Stby lights not coming on......
Mine had the same procedure as all the other posting this - Could take up to 48 hours for the light to come on but this time only the whistling sound from the fan house on the front was present.
So i dissmounted the power supply located on a standing card at the back of the housing and found the faulty component :)
The solution for this problem is a IC in that board called IC MCZ3001DB changes this and all your problems with the projector not starting will be solved.
Kudos to kowe for this solution!
My CS4 had the same no power and no light problem...eventually got to where it wouldn't power on at all. I located the A1316568A PCB after disassembling the unit (this board is located near the rear of the projector when looking at with the lens pointed toward you). The entire board is expensive to replace (i.e. over $200), but all you really need to do is replace the MCZ3001DB IC on this board (provided you have some soldering skills). I found this IC on eBay for $20 (3 pack), and some 18-pin sockets @ hobbyengineering.com ($.99 ea). You don't want to solder the IC directly to the board. After replacing this IC, wallah...the unit powered right up! If you need any specific help with this repair, just email me...hi_bandwidth at yahoo dot com.
The board is right underneath everything, near the back. I agree with kowe, regarding the IC number.
You need to lift out the whole optical assembly to get at the relevant circuit board A-1316-568-A (but note that mine had a sticker over the circuit board number with a different number on: ...-576A) - It is mounted vertically along the back face of the projector, but you need to remove the optics to access one of the two screws that holds it in place.
I would also mention that my projector was ceiling mounted and pointed down at a wall at a very fairly angle of downward slope, outside that specified by Sony. My guess is that this led to heat build up at the top (back) of the unit that caused that chip to fry.
Was yours also used pointing steeply downwards?
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Hi,
I have the excat same problem. I have been through the whole projector, but could not find the A-1316-568-A that you are writing about. The close I can come is A 1316-575-A. Where exactly is it placed in the projector, and how does it look like?
Stian
I can confirm to you that the problem is caused by the A-1316-568-A since i had two CS4 in shop for repair and was hable to swap boards. now i will let you know if i can fix the board because it sells for about 300$ Canadian
Check out the fan cover switch just behind the vent grill.
next to the input panel. you do have the vent grill fitted ....
the switch is almost invisible but must be made by the
peg on rear of vent grill
garry
Ok so I don't persay have a final solution, but maybe something to help you troubleshoot the issue. I tore mine completely apart, checked the lamp, the fuses, any loose connections, all of that. When I plugged it in I got the same problem as before..BUT this time I left it plugged in overnight (about 20 hrs maybe) and finally the lamp/cover light came on. So our problem might be as easy as replacing the lamp. I will check this theory at some point, just need to get the money first. I'll let you know when I replace it.
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I have the same problem....whats weird is mine works now and then. When I plug it in I hear noise on the inside like it's trying to fire up, but I get no lights and none of the buttons work.
I have the same problem as well. Was working just fine yesterday but today - no go. The power cord tests out just fine. Tried different outlets - same result. I get nothing from the projector - no standby light, nothing. I checked the lamp thinking maybe that was the cause but it looks okay. It's only a couple of months old as well.
I'm stumped.
Great unit - same problem. Not a cord or outlet issue. I'm stumped.
I have the EXACT same problem. I even hear the noise inside, but can't get even one light to illuminate. Do we have a solution yet?
I have had the exact same problem for some months. You plug it in and no lamp comes on. Listen carefully and you can here a faint hissing coming from behind the front grill (knackered capacitor?). After a few days the power light comes on and all is well until it is next unplugged (or there is a power cut), in which you have to go through the same routine again.
Unfortunately, over time the waiting time has increased and mine now does not light up for at least seven days. Therefore it is in pieces on my table.
Does anyone think that this might be a power supply problem - a leaky capacitor means that the projector side of the power supply system never gets up to full voltage, and so the lights never light up?
If anyone has a working CS4 could they listen carefully to the front grill when it is on standby? Does it make a very faint hissing noise?
Hope these thoughts help.
Regards,
Robin
Further dismantling and careful listening suggests that it is the litte green component immediately behind the fan that is hissing/buzzing/whistling.
r
Well, I have been savage and completely dismantled the projector.
1) I found an identical one and it does not make the same noise when on standby.
2) I used a multimeter to follow the power through the system and eventually got to a PCB called A-1316-568-A, which looks fried. It has brown stain underneath and smells faintly of burning electronics, so I guess this is the cause. Googling this number gets to a site that will sell you one for two hundred and odd dollars, if you have a username and a password. Oh, and its a US site - I can't find a european equivalent.
So I suspect that my projector is broken.
There is a fuse directly behind the power socket, which might account for someone elses problem - easy enough to check if you have a screwdriver.
Hope this info helps someone else out.
Regards
r
I have the same problem as these. I have fitted a new lamp, done the reset procedure several times and still no light. I cannot find the fuse for the lamp board but am getting the leds lighting correctly. Just no light. All the covers seem to close the switches but the warning leds for these don't come on so it is not them. Mine used to make the zizzing sound as the lamp struck up, nothing now. Can anyone tell me where I find the lamp fuse. I guess I will give up soon and ebay the new lamp (unless someone has the answer). No signs of damage on any of the boards I can see and no burning smell.
Thanks for looking.
Same problem, but I cannot find the A1316568A PCB. Where is it placed, and what does it look like?
Stian
Same problem. But I cannot locate the A1316568A PCB. Where is it placed?
Stian
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