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#1
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Rockola 490-1 free play on,says insert coins,won't play selection
I finally killed my Rockola 490-1 by procastination.I knew the battery should
have been replaced but let it go.Sometimes if it sat a week without playing I would have to put free play back on and the default pricing light would stay lit.Today I wanted to play it and when I turned free play on the normal operation light was lit.When I punch in the selection the insert coins light blinks and then it erases my selection.Inserting a quarter or adding credits with free play off does no good.Is this what it does if it loses all the pricing programmed into it?I took the cover off the computer the battery is in the right front bottom with no components underneath it(good thing) and doesn't appear to be leaking so I don't think it damaged anything.The only way I can get it to play is system test but I don't want to sit and listen to every record in sequence,lol.If I replace it and reenter all the pricing will it work or is something else wrong with this thing? |
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#2
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I think your problem is more than just a battery. Dead batterrys will
clear pricing and put it to default. All default means is one for a quarter. When you attempt to put it on free play, do you get the 99 in the display? If you do and the normal op or default light is the only one on, pricing is correct and it should work. Have you reset any of the dip switches? Try it with only #7 on, this enables 200 select. The others are for bonus pricing and testing. Note, a shorted battery can cause goofy things to happen. Try removing the battery and see whay happens without one. These batteries are 3.6 volt NI CADS not Lithium. A lithium will not work properly, it doesn't charge. To use a lithiun you most change a resistor to a blocking diode. If you need, I sell the batteries and can also repair this computer. Charlie Maier |
#3
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I do get the 99 in the display.Before today it would forget it was on free play
and the default pricing led would be lit.I would put it on free play and it would work fine.No w just the normal op light is lit,no pricing lights are lit.Free play or adding credits doesn't matter.Credit shows but insert coin light blinks just like there is no credit.Battery is not dead shorted.When on has 2.5v on battery,however it quickly falls down to 1.3v when juke is unplugged so it might be partially shorted.If charging voltage is supposed to higher than 3.6 volts.I'll try unsoldering it.Any other ideas what to check?Possibly not getting full 5v in the logic circuit?I'll check it if you think that could be a possibility also.I'm not afraid to do a little troublehooting myself.I repair consumer electronics for a living.Can you believe it failed exactly 10 years to the date I bought this jukebox?Bought it the last weekend of October,1994.Can't believe the battery lasted 19 years.It remembered it was on free play and pricing and everything til a few months ago. |
#4
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Charging voltage without a load -no battery- is around 6 volts. If 5
volt power supply was low, would not boot up, stay in initialize-, try all that I told you, also clean edge connectors. I don't think that will help, but it won't hurt. If you need a battery , I sell them. I can also repair the computer for you. Charlie Maier |
#5
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I removed the battery.Charging voltage is over 5v like you said.I tried it some
more afterward.I think it was the same before I took the battery out.It will play all ending in 0,4,6 and 8 and that's it.100s or 200s.All others it doesn't recognize there is a credit.It passes all the tests in the test column.I tried programming the pricing.You should see some of the numbers stored in there.5.34 for a unit price! .86 for 55 plays!And why isn't the default pricing lit anymore when it's plugged in.It did store the prices I put in as long as it was plugged in but didn't help the playability issue.Went right back to the oddball pricing table after being unplugged.Do you think the memory got corrupted by the B+ line for the RAM being held low by the battery?Let me know how much for battery and repair off list. |
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