rossh
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Posts: 9 
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Post by rossh on Feb 28, 2018 15:11:34 GMT
Hi
I have a W2304. it will select the all the A's no problem and go thro the cycle. However B, C and D blow the 2A fuze. I have changed the solenoid but still no luck. The B and C coils check OK. The B and C pull in, then the main solenoid pulls in and the fuze blows. I have looked for a short on the button bank and elsewhere but cannot find any.
Anybody got any ideas or had this fault?
Ross
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Post by Ron Rich on Feb 28, 2018 15:24:59 GMT
Hi Ross,
Offhand--no ideas---but WHICH 2A fuze iz you blowing--and izzat suppozed to be a "2A", or a "2A SB" ? Ron Rich
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rossh
New Member
Posts: 9
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Post by rossh on Feb 28, 2018 15:55:35 GMT
Sorry Ron, the 2A QB on the power supply?
Is it supposed to be a slo blo?
Ross
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Post by Ron Rich on Feb 28, 2018 18:39:14 GMT
Hi Ross,
"---QB--" Whatz a QB fuse ? Probably says "SB" ? --Once again --what does this fuse "protect" ? Ron Rich
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Post by robnyc on Mar 1, 2018 7:55:39 GMT
Hi I have a W2304. it will select the all the A's no problem and go thro the cycle. However B, C and D blow the 2A fuze. I have changed the solenoid but still no luck. The B and C coils check OK. The B and C pull in, then the main solenoid pulls in and the fuze blows. I have looked for a short on the button bank and elsewhere but cannot find any. Anybody got any ideas or had this fault? Ross Ross, if you are sure the replacement solenoid is Ok, I'd make sure to use a 2A/slow fuse. The solenoid drive CKT is shown here: www.flickr.com/photos/90641375@N06/36212509525/Does the fuse blow only when the carousel/changer motor is also running -or even from standby? The old DC changer motors often suffer from shorted turns in the armature and carbon buildup between the commutators. This results in increased current drain and when combined with the driver solenoid operating at the same time, is can cause a blown fuse in the LVDC supply. RobNYC |
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rossh
New Member
Posts: 9
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Post by rossh on Mar 1, 2018 10:23:25 GMT
Hi Ron, Quick Blow, standard fuse. Its the one in the power supply inline with the 'Rectifier'. On the schematic it just says 2A.
Rob, It blows with the motor disconnected. Also I have tried it with the B and C coils disconnected as well and it still blows.
PS I'm in England so on a different timezone. Also we have had 1/2 inch of snow so the whole country is in chaos!
Ross
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Post by Ron Rich on Mar 1, 2018 15:08:15 GMT
Hi Ross,
Remove and clean up the motor, then install a 2 A, slow blowing, fuse-- I believe that will solve the problem ? I am not to familiar with that cabinet, but I once went crazy with a 1900 that would blow that fuse, whenever it wanted too--long story short--WurliTzer glued a large section of "fish-paper" under the ABCD buttons, that some jackass had removed ? If the button was pressed hard, the fuse would blow ( had to find another 1900 to learn that one !) Ron Rich ---snow ?? whatz that ?? (Almost never snows here !)
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rossh
New Member
Posts: 9
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Post by rossh on Mar 1, 2018 15:20:04 GMT
Hi Ron
Thanks for the advice, I will try that.
I'll let you know how I get on. It will be a while as the blizzard is getting a lot worse and I cannot get to the workshop without risking frostbite!
Ross
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rossh
New Member
Posts: 9
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Post by rossh on Mar 7, 2018 13:21:11 GMT
Hi Ron
Thanks that worked (2A slo blo).
Ross
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Post by Ron Rich on Mar 7, 2018 17:10:48 GMT
Ross, You are welcome--Whatz a "blizzard" ? Ron Rich
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rossh
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Post by rossh on Mar 8, 2018 9:42:47 GMT
A 'blizzard' in England is when it is windy with occasional snow flakes. Trains stop running, airports close, roads become impassable, shops run out of food etc.
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