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Post by gazzy58 on Oct 14, 2019 21:59:39 GMT
Hi folks, just joined up to this forum, so please let me know if I make any mistakes or blunders. I have just picked up a Rockola Capri II 416 very cheaply at auction. Looks to be complete, but will need a major stripdown. I have been collecting jukeboxes for many years and have a little technical knowledge, but always keen to learn more. I currently own an AMI Continental 1. With this new jukebox, among the long list of things that need doing is replacing the original finned rectifier. This is where I could do with some assistance. Somewhere I have a small square shaped modern rectifier with 4 diodes and 4 "legs" coming off it. My question is, will this act as a direct replacement or will I need to put a resistor in series? If so, what size of resistor do I need and how would I go about attaching it to the new rectifier? If any member has already carried out this operation, it would be great if they could give a detailed description on what they did. Also, if any member owns a Capri II or similar, it would to good to get a heads up on what to look out for and parts to replace etc. I am already looking at replacing the 3 black micro switches on the cam and TT motor grommets. The first thing I bought was a service manual which I am still trying to get my head around. I would not normally buy a machine like this that is not working and with no history to it. However, it was not expensive and I can always view it as a challenge to try and get it going again. Worse case scenario is I can always sell it for spares. All help/advice and encouragement will be greatly appreciated. New member Gary
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Post by Ron Rich on Oct 14, 2019 23:43:55 GMT
Hi Gary,
First question--WHY, do you want to replace that rectifier ?? Measure the output, if within range, it's fine ! If not, a rectifier brick, of a size large enough to cover the output voltage, should be just fine. No resistor needed, but I would suggest you fuse the AC side with no larger then a 1/2 A SB.
2nd question-- "Micro Switches"--Again why ?? Check them as described in our FAQ's section--might well be OK ( and might not be "MicroSwitch" brand either !). Ron Rich
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Post by gazzy58 on Oct 16, 2019 12:30:03 GMT
Hi Ron, thanks for the words of advice. I will hang off on replacing the rectifier and switches for now and see if they work. If the rectifier decides to fry, I have been told there will be a smell similar to rotten eggs. When I eventually get to powering the machine up, do you think I should use a Variac type device or just "go for it" with my hand on the off switch. Keeping in mind that this machine appears to be fairly original and unmolested, but it does look like it has been laying around for some time. Are there any areas you would recommend I should be looking at before powering up. I was thinking about checking and cleaning all motors, cleaning and checking all contacts and relays and cleaning the tracks on both sides of the wobble plate. Checking all fuses are correct. The TT motor grommets have perished and replacements are on the way. Do you think it would be worthwhile disassembling and re lubing the gripper bow assembly first as it felt very stiff when turning it by hand or should I try and get some oil into it and free it up as a temporary measure. Just trying to work out the best way to approach this project and avoid any expensive burn outs of transformers etc. It would be good to get your advice on this. Apologies for my incorrect terminology regarding the microswitches. I did not realise Microswitch wes a brand name. Its a bit confusing as the service manual refers to them as micro switches. Best regards Gary
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Post by Ron Rich on Oct 16, 2019 12:47:35 GMT
Hi Gary,
Look at that rectifier carefully- no paint missing, no "bubbles" in the paint--Most likely it's OK--yes--they do stink when they fry-- OK if they just fail slowly--less and less output--no smell that I have ever smelt- A slow start is always a good idea-- Use a dim bulb tester at least for initial start up--
Gripper --see the discussion here starting with the "sticky"--
The people at Honeywell are pretty adamant about the miss-use of their trademarked, Micro Switch, name !
Ron Rich
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