448 100 (A) side not working

[Ron Rich]

Hi James,
Please, if you quote someone, give them credit--I prefer not to see too much "quoting" done-- Yes-- that's what is written for the 400 series Rock Ola's in that sticky ! Did you use "Deoxit-5" ? Ron Rich

[jamesc Modesto, CA USA]

Hi Ron,

Copy that on quotes - no problem  

Yes sir I used detoxit D5.


I ordered another manual in hops that it has more information. What is still unclear to me is I do not understand what stops the "readout" carriage, the pinplanks and then the hammer to know them back in or is it something else that stops it at the "write in" location.

Another strange issue happened, the record would not cycle after play. The turntable would keep spinning with the record on the platter. It only happened a couple times but when added to my current issue I had to walk away to keep from getting to frustrated...ugh. So I ordered a PDF until l I find a good print manual.

Thanks for the tips/info so far Ron!

[Ron Rich]

James,
The "Stop relay" is what "stops" the carriage -- That relay is OK on you phono, if it stops for the other side of the record-- Once stopped, for either side, the operation is strictly mechanical till cut off. So therefore, the problem HASTABE, between the AB switch, the ring, contact block sensor, on the read-out arm, that the read-out arm senses. Did you use an Analog meter to follow that electrical path--- ? Ron Rich

[jamesc Modesto, CA USA]

Thanks Ron,

I will start at that AB switch. I saw that in the diagram but is that the same switch called the "lock bar" If so then if it were bad it would not start the write in sequence?

I will pick up a small analog meter.

What is the contact block sensor if you dont mind me asking?

What service book would you recommend since I will be keeping this 448 and these two PDF manuals I have are not clear enough to read the smaller circuit print

[Ron Rich]

Hi James-- No, I doubt the "lock bar switch" is the same one-- It would seem to me that in RockOlaEase, "Lock bar" is what they call the treddle-bar or latch bar in the keyboard ? For manuals--please read our FAQ's section. Ron Rich

[jamesc Modesto, CA USA]

Okay Ron,

I'm right at the door of the issue. Now I can clearly see what it is doing.

When I depress "1" on the selector switch and no matter what the other two digits are my lights always show 2XX not 1XX
When I select "2" everything is properly sequenced as 2XX

So normal operation 1XX = 1XX
2XX = 2XX

I get this 1XX = 2XX
2XX = 2XX

Its a switch problem.
When I select "A" side The write in thinks I selected "B" side and the read out is looking for "A" side. All I have to do is find that switch. Its not switching

[jamesc Modesto, CA USA]

" RockOlaEase" lol. I take it you are a seeburg guy?

This just happens to be the first box I purchased about 4 years ago. We found it at a thrift store and the colors just happen to be what we were using in our theater room so it seemed like a match. Worked flawless until I stored it the last 3 years while we were restoring our 60 Chevy. I think had we kept it in the house with a more consistent temperature/humidity we might have not had any issues.

So, Chevy - Ford - Rockola - Seeburg I take it? LOL, we have a 60 Chevy and a 60 Ford... I get it

[Ron Rich]

Hi James,
Yes-- I worked for the Seeburg corps., for a number of years--
I think you are mixing up apples and lemons-- The number you see on the "display", has no bearing on what you are "pushing" on the keyboard.
What happens if you use your hand to select an "A" side pin ? Have you observed the AB switch-- is it being "toggled", or not ? Ron Rich

[jamesc Modesto, CA USA]

Nice, I like the idea of an older Rockola OR a Seeburg. I think the seeburgs have 200 record selections which would give my wife and I plenty of options.


Ahhhh,,, okay I see. I toggle the A or the B side pin by hand and I get the B side to light up on the display. It never shows the A side as being illuminated.

I will have to find the AB switch. I do not know where it is physically located. I though it was in the control box, by the buttons that's why I was confusing my fruit

That pin toggle is a neat trick

Thank you Ron

[jamesc Modesto, CA USA]

Okay Ron,

The problem is the AB snap switch.

I found its location in an enclosed box. I gave the box a slap and it worked so i will open up the box and see whats getting stuck in there.

In the meantime I got some 1 in one motor oil as stated in the FAQ and will lube the 448.

Will report back when I find out exactly what it is that is getting stuck down there.

I have to pull the unit out from its location to gain access to the underside.

Hopefully its just a bad connection on the cables.

[jamesc Modesto, CA USA]

Sequence 19 is the problem, not sequence 17 as originally suspected.

[Ron Rich]

James,
I have never seen an AB switch in an enclosed box ?? I do not have the manual to follow you sequence numbering--- sorry-- Ron Rich

[jukenorman]

The A-B snap switches are shown as item 8 on page 47 of your manual, the page after the sequence 19 schematic.
Norman.

[Ron Rich]

Hi Norman,
Can you imagine that?--who wooda-ever thought, to l@k "in the book" ?    Ron Rich

[jamesc Modesto, CA USA]

Thank you Norman,

I was having tunnel vision on sequence 17.7 because that is where I thought the sequence was stuck. So my focus was on page 44 AB switch for the 1st 2nd digit "lights" since I did not fully understand the sequence of events.

My understanding was that the AB switch or diode on page 44 was one of the switches located in the selection control box on page 17, (diode on PCB page 14 schematic) that controlled my lights, which they do, but I was making fruit salad as Ron explained

Main point is that I was looking for a problem in an earlier sequence until Ron made it more clear then I started looking beyond sequence 17.7


I originally thought the hammer coils made the read out carriage stop so I was wondering why they were not firing at the A side lever but fired at the B side lever.

Then I lowered the top to see exactly what the lights were doing given new sequence information and then the other light went on in my brain! So as you stated Pg 14 item 8, gave me a clearer reference to the location of the switches.

Having said all that, my brain almost exploded so I had to walk away yesterday from the jukebox for the sake of my sanity.

The readout carriage will not rotate and I am tripping the main circuit breaker on the power supply. I have a feeling the AB switch is now stuck in no mans land so today I will pull the box out to gain better access to the rear of the machine and see what is going on down there.

I ordered a set of printed manual/troubleshooting guides with schematics because up to this point I have been using the online PDF which is horrible for reading the schematic and although it shows sequences, the small print is horrible and printing all 107 pages would be a waste of ink/paper.

So that is where I am right now. UGH!