Westland, MI
So I have a 6264 nvram and want to put it in my Cyclone. Do I need to change any jumpers to make it work? Is this the right one for Cyclone?
(Topic ID: 270792)
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Ok so here is my board. I’m assuming this is the model number? The Nvram goes in u25 correct? While I was under the hood I checked the voltages on the board. The test points on mpu was 4.91. I should probably rebuild the power supply correct?
Quoted from PinballManiac40:Yes, it is U25. Personally, I would go with 6116 since it does not require a jumper change. Of course, I would say that since I have both on hand at all times.
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I only have the 6264 so looks like when I replace u25 the jumper below just needs to be moved over correct? Sometimes I get a u25 ram failure on boot up so hoping this will cure it
Quoted from PinballManiac40:Technically, a good 5v is between 4.75 to 5.25v. I would still replace the capacitors on the power supply. Electrolytic capacitors only have a certain lifespan and many of the smaller capacitors are at the age now that they are leaking and sometimes even damaging the pads under the part. Just because you replace the capacitors, does not necessarily mean you will raise your 4.91v. New capacitors will keep from having some intermittent issues.
Ok cool. I will order up a kit
Quoted from PinballManiac40:Yes, U25 and that one jumper change, just as it shows on the post. It should fix it. Problem is that C30 (axial 22uf 10v) on the MPU sometimes causes similar fault. I definitely would try the NVRAM first.
Becareful. The pads and traces can be easily damaged.
Right on. Appreciate the help. May get to it later today or tomorrow. Will post results. Gotta make sure I have the right socket too
Quoted from PinballManiac40:After removing the old RAM, I like to take a picture and zoom in on the top side of the board to he sure I did not damage anything.
good call thank you for the tip. Do you cut the rams legs or just desolder? I do have a hakko
Quoted from PinballManiac40:I normally cut the legs close to the body as I can so it makes it easy to heat the pins and lift the pin from the board. If you use the Hakko, don't put pressure on the board when heating/sucking solder out.
I had already installed over 200 NVRAM for myself and others around town as I do other game repairs for people as time allows.
Cool thank you. I’ll go with the cutting the legs approach
1 week later
Ok something is wrong. Turned the game on get a buzzing noise and no boot. Turn it off and on it boots but then start rebooting intermittently. Try to start a game and it reboots. Turned it off and on and have left it on for a few and hasn’t rebooted again. Didn’t start a game yet. Played great last night
Quoted from PinballManiac40:Your low 12v likely has something to do with that.
I’ll test the bridge tomorrow and see if it’s that.
10 months later
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