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Author Topic: PC Engine CD drive requires warm up  (Read 1485 times)

chriscomputers

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PC Engine CD drive requires warm up
« on: January 03, 2011, 07:33:19 AM »
I have a PC engine CD (original white) drive that works great but in the first 5 minutes of use loads very slowly. After this time period I can restart the same game and it reads very fast like new. I have tried adjusting the CD lens gain and the other various potentiometers on the board with no luck solving this warm up issue. Has anyone had any experience with this? Is this maybe some of the caps on the board going bad? I do have experience soldering but I have no idea which capacitors to change. Just trying to avoid changing all of them. Any ideas anyone?
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blueraven

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Re: PC Engine CD drive requires warm up
« Reply #1 on: January 03, 2011, 07:41:06 AM »
I have an American TG16 CD unit that takes 15 minutes to warm up.

We haven't isolated the issue as of yet, but this has been discussed in the repair threads. BlueBMW and chop5 both had the unit apart, and were working on figuring out the issue. I'm hesitant to open it back up because it's working currently with the anticipated warm-up, and that's good enough for me just to play games.
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BlueBMW

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Re: PC Engine CD drive requires warm up
« Reply #2 on: January 03, 2011, 10:12:26 AM »
This brings us to about six different units afflicted by this warm up plague... I've tried everything I know to do. :cry:
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Marll

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Re: PC Engine CD drive requires warm up
« Reply #3 on: January 03, 2011, 11:34:03 AM »
I've noticed mine loading slowly sometimes if I just start it up and start playing.

The first thing that sprang to my mind was a capcitor as well, with the warm up or charging period, though I'm not sure that would be the case with these units.
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chriscomputers

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Re: PC Engine CD drive requires warm up
« Reply #4 on: January 03, 2011, 12:02:40 PM »
also, one more thing i noticed is that if i try to use the drive seperately say just for audio. It will not read anything if i use the standard pcengine cd 9v ac adapter. I have to use a normal 10v turbografx system ac adapter for it to work this way. maybe whatever takes in the voltage is starting to give out?
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BlueBMW

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Re: PC Engine CD drive requires warm up
« Reply #5 on: January 03, 2011, 01:05:53 PM »
On the units that I've had that have this issue, I have tried replacing all the capacitors as well as the BA driver chips.  I am lead to believe that its a RAM chip issue or a microfracture issue of solder (that once warmed up corrects itself)
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henrycsc

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Re: PC Engine CD drive requires warm up
« Reply #6 on: January 03, 2011, 01:47:29 PM »
Beamer, I was curious if you ever got to try "preheating" the unit on something like an electric blanket to isolate if it's actually a temperature thing or if it is something completely different.

I was thinking that if you warm the CD up first on something else, then plug it into the base, if it starts instantly, then something is probably happening that is purely temperature related.
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BlueBMW

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Re: PC Engine CD drive requires warm up
« Reply #7 on: January 03, 2011, 05:14:19 PM »
Hmmmm that's a good point henry.  Ill give that a try!
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nat

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Re: PC Engine CD drive requires warm up
« Reply #8 on: January 04, 2011, 04:59:34 AM »
My white CD-ROM^2 connected to my SuperGrafx has this issue. The symptoms are nearly identical to what the OP describes. It started happening after I replaced the laser in the unit-- not sure if it's related or coincidence. I haven't really looked into it since everything is 100% after five minutes or less.
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BLADES OF STEAL

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Re: PC Engine CD drive requires warm up
« Reply #9 on: January 04, 2011, 06:08:49 PM »
Hi, I joined this board to specifically ask about this problem. I have a tg-16 cd add on that I purchased new. It was from the first $400 batch they made. I rarely used the thing and it has been stored in the case. I pulled it out a few months back and tried to start it. Nothing. I left it on and when I came back it was running. So, now when I play I have to wait for it to warm up. If I plug the ac into the disc unit directly it seems to heat up quicker. It's like some glue inside needs to heat up for wires to make contact.  BTW, the unit was never dropped or EVER opened since the factory. Which is why I find this strange. From what I'm reading nobody can pinpoint why this is? :-k
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BlueBMW

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Re: PC Engine CD drive requires warm up
« Reply #10 on: January 13, 2011, 02:01:43 PM »
Stay tuned... I may be on the verge of solving this issue... one more round of tests tomorrow night will hopefully yield an answer.
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BlackandBlue

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Re: PC Engine CD drive requires warm up
« Reply #11 on: January 14, 2011, 03:00:53 AM »
Quote from: BlueBMW on January 13, 2011, 02:01:43 PM
Stay tuned... I may be on the verge of solving this issue... one more round of tests tomorrow night will hopefully yield an answer.

Thats good to hear, since I may have this issue.  I replaced the laser a while ago in my black unit and tried to play a game on it the other day and nothing.  I may let it sit for a while to warm up to see if it starts to work again.  I could not have possibly burnt out the new laser that quick.  Probably less than 100 hours use on the laser.
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nat

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Re: PC Engine CD drive requires warm up
« Reply #12 on: January 14, 2011, 10:27:15 AM »
10-to-1 you've been hit with the "warm-up stick."
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DJGoodNews

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Re: PC Engine CD drive requires warm up
« Reply #13 on: January 14, 2011, 12:56:19 PM »
Just got a PCE CD off eBay that's having this problem. Registered to add my name to the list of people interested in a fix.
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BlueBMW

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Re: PC Engine CD drive requires warm up
« Reply #14 on: January 14, 2011, 01:52:29 PM »
Running some tests right now!  Should have an answer one way or another as to whether or not I've solved this!
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