View Full Version : No audio\visual
I am looking at an old ps2 of a friend of mines. Its a v3. He gave it to me for free to mess around with because he bought a new one. The problem is that it has no audio or visual and the duisc does not spin. I have already checked the cables. Any clue where to begin?
I have also noticed that the screen does flicker briefly when going to or from standby, but thats it. Does not even go to a black screen. I have also noticed that the eject button seems a little slow to turn on. I have gone back through and rechecked the cables for continuity and they are all fine.
TylerDurden
12-03-2003, 12:38
The laser itself may be dead.
Tyler!
AZSupraKING
12-03-2003, 14:43
Would that really cause these bad of symptoms. i would expect that if the laser was bad it would still run through the opening sequences and amybe stick at the browser screen.
TylerDurden
12-03-2003, 15:07
Wait a minute. Sorry I didnt read this correctly as I was in a hurry. Have you tested with a known working RCA cable? Try wiggling the plugin in the back.
Disregard my old statement for now.
Tyler!
I only have 1 RCA cable the same that I use for my own PS2. Checked the connection and seems good. The other problem that would have nothing to do with the RCA is that the disc will not spin.
TylerDurden
12-03-2003, 17:09
Well Im no expert in repairing broken consoles but it seems to me that maybe somethin is fried or dead.
Tyler!
I did a little research and found that a completely dead laser will keep the disc from spinning, but nothing was mention if it will keep the screen displaying. I'm definitly going to look into this further before I try and get a new laser.
TylerDurden
12-03-2003, 17:31
Well I wish you the best of luck. Please post your results, Im sure there are more than a few people interested.
Tyler!
Not an update just more info for anyone who can help. I have read that when a laser goes bad the disc will often do a 1\4 spin and do nothing. I have removed the top of the DVD drive and the laser turns on for like 1\20th of a second and then nothing. The drive does not even try to spin.
I can't find any signs that anyone has tried to solder to this board so I doubt that anything has been fried that way, though I am sure that other things can and do happen. However, I did upon even more inspection find damage to the laser. It seems that the screwhead on the CD pot has been almost completely removed. There is nothing remaining of the part that the phillips head would fit into. All that is left is a tiny (2mm at most) piece of metal around the edge. Most of the contact surface underneath is clearly visible. This does answer my laser not working and leads me to beleive that it is the root of the disc not spinning problems. Could this also cause the screen not to display at all?
When I start the TV remains on a blue screen as though no signal is being sent.
You can find a pic of the laser here (http://bigboost.dyndns.org:6080/tmoore/Laser%20Pots.JPG) If anybody has any tips on how to get better close up pics of the PS2 let me know.
Yeah, u can unplug the laser and flash a ps2 up and u still get audio and visual and the laser does a quarter turn.
That quarter turn thing is only providing the laser has power. If it not even doing that then I would suspect that there is no power to laser.
Further more if the ps2 has no audio or visual then ther is a lot of juice missing somewhere.
You get a st/by light and eject light so not totally dead.
Does the tray eject?
Does the fan run when switched on?
There r a lot of surface mount fuses on the motherboard and It sounds like one of these have gone.
Have a look on google for a diag of fuses, there r several about and check the continuity of these fuses.
Could also be a power supply board problem. e.g the supply is stable enough to run leds,fans,eject systems but not to run logic on motherboard and laser controller.
Hope this helps, let us know how it goes!!
Just looked a laser picture. The cd laser intensity pot does look shotaway.
Best way ahead:
Disconnect the laser totally, does the ps2 audio and visual work?
Check surface mount fuses on motherboard. Has faulty laser blown one of these?
Good luck.
Thanks for the help ottoman. Just a note the laser does blink once when first reset, then nothing. I have yet to find a good list of fuses, but still looking. I'll try it with the laser unplugged a little later and see what happens.
I have gone through and checked the fuses. The only irregularity was that fuse PS5 had continuity but at about 6.5 ohms. The rest were all good at less than 0.2 ohms. Does this mean that PS5 is bad? Also does anybody have the power levels for the four pins from the power supply so I can check these?
I'm not a huge expert on the subject but apparently there's 2 lasers in the laser head, a dvd and a cd one. Could be the dvd one flashes up but the cd one doesn't.
AZSupraKING
13-03-2003, 14:58
The only irregularity was that fuse PS5 had continuity but at about 6.5 ohms. The rest were all good at less than 0.2 ohms. Does this mean that PS5 is bad?
I'm not a PS2 expert(you know that) but I would have to say that a fuse showing 6.5 ohms with no power on it is probably going to open fully under a load:confused: :confused: Maybe we/you can check the same fuse on your system later...
OK, it's probably not the recomended way to check a fuse. I took the fuse that was regestering 6.5 ohms and removed it. Unplugged the laser, which I am assuming the bad pot cause the fuse to blow, or someone tried adjusting the pot to far cause they thought there laser was gone when it was a fuse. Then I soldered a peice of my 32 gauge wire between the points where the fuse was, and then reassembled the PS2. Turn it on and presto, I got a screen again. I have seen a place in England that is selling the fuses I need but at 1.5 amp, not 1.2 amp like the original. This difference I am sure will not matter but I would prefer somewhere in the US bacause shipping does not make sense for a $5 part, they are only sold in 5 packs. Also it would be handy to get the laser and fuses from the same place. There lasers where about $15 more than other places. Any suggestion are appreciated.
AZSupraKING
13-03-2003, 20:43
OK, it's probably not the recomended way to check a fuse. I took the fuse that was regestering 6.5 ohms and removed it. Unplugged the laser, which I am assuming the bad pot cause the fuse to blow, or someone tried adjusting the pot to far cause they thought there laser was gone when it was a fuse. Then I soldered a peice of my 32 gauge wire between the points where the fuse was, and then reassembled the PS2. Turn it on and presto, I got a screen again. I have seen a place in England that is selling the fuses I need but at 1.5 amp, not 1.2 amp like the original. This difference I am sure will not matter but I would prefer somewhere in the US bacause shipping does not make sense for a $5 part, they are only sold in 5 packs. Also it would be handy to get the laser and fuses from the same place. There lasers where about $15 more than other places. Any suggestion are appreciated.
So, you did take my advice and try that, huh;)
Had to do something. Gets boring wiating around all day doing nothing but thinking about PS2's
good to hear u know wot the problem is.
Also relieved to hear that my advice worked!
Best thing now is to drop in a reconditioned laser and sell it on.
Version 3's r okay if u just want to use originals but for backups they ain't that good.
i bought a broken unit off ebay dose the same thing what fuses was the ones that went to the audio/video ?
ihaveanosebleed
16-01-2004, 05:51
You MIGHT be able to save the laser by soldering a 800 Ohm
resistor to where the POT was ( a very delicate soldering job ).
spedmetal
16-01-2004, 20:35
Originally posted by ihaveanosebleed
You MIGHT be able to save the laser by soldering a 800 Ohm
resistor to where the POT was ( a very delicate soldering job ).
Nah just get a new laser. You never know what damage was done to the diode with the pot like that, or the coils may now be shorted and that’s the ultimate reason why the fuse blew and soldering a resister in the pots place will do nothing for the diode or the coils and it could just blow the brand new fuse your about to put in again. Then you’re out another fuse and another order for a new one to fix it again. I would just get the laser and fuse from the same place if I could so what if it’s another $15 at least it will be one shipping fee.
ihaveanosebleed
17-01-2004, 05:24
I would try it, but then I'd never pay for a replacement fuse either, got a junk room
full of parts! I'm sure fuses are pennies compared to replacement lasers.
Also, If I did need to buy a laser for a system like this, I would test the board with
a working laser first. Just because the browser loads doesn't mean the laser control
circuits are working. Try to get your hands on a V1-4 laser to test before you spend
any money, if at all possible.
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