Hf100R Sluggish Keys

Q&A about all types of jukeboxes: Wurlitzer, Seeburg, Rock-Ola, AMI, and more.



Topic author
carl_694
Regular Member
Posts: 44
Joined: Mon Mar 24, 2014 10:30 pm
Location: York, PA, United States

Hf100R Sluggish Keys

by carl_694 » Tue Oct 07, 2014 3:38 am

Weird problem I've not seen covered elsewhere... The keys on my 100R will stick for several seconds for the first several selections after turning the machine on, every time. Issue improves as more selections are made. No issues with mech or playing, just the keys. I have not recapped the receiver (did the amp) and have a free play box installed. Is it just the receiver?


Rob-NYC
Senior Member
Posts: 1844
Joined: Sun Sep 25, 2011 3:05 am
Location: Manhattan, NYC USA

Re: Hf100R Sluggish Keys

by Rob-NYC » Tue Oct 07, 2014 4:41 am

Carl, im y experience them most frequent causes of this are;

1) Pitted contacts on the timing relay (credit unit).

2) Residual magnetism in the latchbar solenoid.

3) Gummy old oil in the credit wheel and it's linkage. This would account for why things improve after a bit of "exercise". Take the cover off the credit unit and observe its operation.

The first one should be dealt with as it can cause burned out coils. The second is just an annoyance.

Ron may have more info.

Rob/NYC
"If we believe absurdities, we shall commit atrocities" -- Voltaire


Ron Rich
Forum Moderator
Posts: 8196
Joined: Sun May 06, 2007 11:31 pm
Location: Millbrae (San Francisco area)CA, USA

Re: Hf100R Sluggish Keys

by Ron Rich » Tue Oct 07, 2014 5:24 pm

Car, Rob,
Rob's nailed it--I usually find that the credit wheel is sluggish, when I encounter this problem--20 wt ND oil can be "worked" into the credit wheel shaft, in most cases, without dis-assembly. The simple test for this, with power OFF, "pull" the cancel coil plunger in--if it does NOT "snap back", the problem is the wheel--
Another thing that is fairly common--the internal "return springs" in the latch bar solenoid are broken off, and lodge inside the plunger area. Same type, power off, test applies here--if this is the problem, usually you can "shake out" the broken parts-and it will function OK--if not, a replacement solenoid is called for--Ron Rich


Topic author
carl_694
Regular Member
Posts: 44
Joined: Mon Mar 24, 2014 10:30 pm
Location: York, PA, United States

Re: Hf100R Sluggish Keys

by carl_694 » Wed Oct 08, 2014 12:19 am

Thanks Rob and Rich!
Latch bar is new as some other "tech" burned out the original while apparently attempting to "fix" the machine. Will check all as advised and let you know!


Ron Rich
Forum Moderator
Posts: 8196
Joined: Sun May 06, 2007 11:31 pm
Location: Millbrae (San Francisco area)CA, USA

Re: Hf100R Sluggish Keys

by Ron Rich » Wed Oct 08, 2014 12:40 am

If new, izzit the correct one--installed correctly--no "binds" ?
Ron Rich

Who is online

Users browsing this forum: Bing [Bot], Jimmler and 9 guests

It is currently Thu Oct 06, 2016 11:16 pm