Zeige alle Beiträge eines Teilnehmers
Hi Oliver, i have got the actual question wrong ,what i meant is a washer between the write-in arm ad the coller which holds it in place on the shaft,
hope this makes sense, tried to attch photo but to big
regards
mick
von - by
bopper
-
Alles rund um Musikboxen
a quick question, should there be a sring washer (thrust) between the wobble plate and the retaining coller on the main shaft of the rockola 430 /1484 etc
cheers
mick
Eine kurze Frage: Sollte sich zwischen der Wobbelplatte und dem Haltekoller auf der Hauptwelle der Rockola 430/1484 usw. eine Ringscheibe (Schub) befinden?
Prost
mick
von - by
bopper
-
Alles rund um Musikboxen
Hi Charly49
thanks for reply, yes i did mean the circit board and rivets, i have the maual so i will study thae chapter and hopefully sort the problem,thanks for advice
regards
mick
von - by
bopper
-
Alles rund um Musikboxen
any help please, rockola 430, i am having problems with selection,when making a selection the write-in wiper revoles but does not make the selection just keeps revolving. i have cleaned the selection plate also checked both write-in solenoids(ok) checked the solenoids from the pins on the jones plug (ok) the problem must be (i think) with the button assembly but i have not much idea about the un
von - by
bopper
-
Alles rund um Musikboxen
Hi again, back in October i had a thread regarding assembly of the rockola 430 selector button unit i had help and photo's from Kai which i used to build the unit, having ust got round to the assembly of the selector i found the 2 tension springs are missing my question does anyone know what the tension these are , do they jus hold the lever in the upper position , can these be purchased a
von - by
bopper
-
Alles rund um Musikboxen
Hi Kai,hope you are well, i am looking for the complete mech including shute, i have obtained a cabinet with no inners, i have most bits amp,power ,credit unit and full mechs ,no coin mechs, i've spent a fortune
already so looking for a good price,
cheers
mick
von - by
bopper
-
Alles rund um Musikboxen
can anyone tell me the part no of the coin mechanism for the rockola 430 or which other models will be ok to replace it
cheers
mick
von - by
bopper
-
Alles rund um Musikboxen
Hi Kai
i have already placed a wanted ad on the site just thought somebody on the forum might know where i could purchase one, thanks for help and advice anyway
regards
mick
von - by
bopper
-
Alles rund um Musikboxen
if anyone can help i require the " SELECT" glass that sits in the top opening of the pushbutton face plate
for the 430/ 1484 etc if you know where i can obtain one please let me know, thanks
regards
mick
von - by
bopper
-
Alles rund um Musikboxen
Hi Kai
these are a great help and good photo's and will help a lot to re-assemble, so a big thanks for taking the time to help
regards
all the best
mick
von - by
bopper
-
Alles rund um Musikboxen
Hi Kai
thanks for reply
the main question is the how the LH and RH push button switch assembly are hooked up to the soleiod by the levers on each assembly as it is not very clear in the manual pics
regards
mick
von - by
bopper
-
Alles rund um Musikboxen
i have aquired a complete selection assembly (face plate ,buttons and the selection units) but it is disassembled and in bits, is there any rebuild manuals available anywhere ,i have the 430 manual but not much in it on assembly, any help please
regards
mick
von - by
bopper
-
Alles rund um Musikboxen
Hi Jurgen
having checked the ecc81 tube connections on the amp they are 6.3v parallel pins 4/5 linked and pin 9
as there is just the one 6.3v circuit there must be a fault between somewhere as the heater circuit is ok to most of the tubes, so that is the next test to trace it round, thanks for info (update) checked voltage at all the tubes 6.1v replaced tubes and tried again all heaters now
von - by
bopper
-
Alles rund um Musikboxen
i have recently acquired a 41719-a rockola amp (yes another) it has been cannibilised ie input socket removed, no tubes, AVC switch missing and other bits, so first i replaced the AVC switch with new one,
i replaced the electrolitic caps including the cans, rectifier and the 850 ohm 25w candohm resistor ,
installed all the valves (stood back !) and powered up, no bangs all seemed ok but 2 EL84
von - by
bopper
-
Alles rund um Musikboxen
HI Jurgen
hope your keeping well, i will have a try at your suggestion otherwise i will install one using the drawing and components,thanks for the help, just remembered, my last posting which you helped me with about my other amp ,i had a guy go over it and he just replaced the rectifier and now it's fine so thanks again
cheers
mick
von - by
bopper
-
Alles rund um Musikboxen
Hi Jens
thanks for that info and drawing i now understand and can now see it in my schematic, how do they incorporate 6 parts in a small module ? , again a big thanks for sorting out my problem, one thing do you know what is the wattage of resistors is a 1/4 watt ok so i can order the bits
cheers
regards
mick (bopper)
von - by
bopper
-
Alles rund um Musikboxen
Hi Erwin
thanks, does this mean all the 3 components you mention are coimbined in the one unit as there is just the one piece in-situ in the amp, which of the connections in your reply is grounded as the one in the amp has a ground, could you make a sketch of the connections please,
cheers
mick
von - by
bopper
-
Alles rund um Musikboxen
Hi all
need to pick your brains again,in the rockola 41710-A amp there is a component (cap) across the input socket terminals, there is no value marked on it only these numbers,1346531//35386 ,as one of the leads has broken off i need to replace it ,can anyone tell me what to replace it with, it is not shown on the amp schematic , it has 3 connections the two outer across the input socket (L++R)
von - by
bopper
-
Alles rund um Musikboxen
Hi Jurgen
i have parcled up the amp a courier is collecting it on tuesday and it's going to a guy to be tested and checked so hopefully i will get some results in a few weeks ,so i will post when i hear news
regards
mick
von - by
bopper
-
Alles rund um Musikboxen
Hi Juregen
i don't think there is much difference betwee your 1484 and my 430 the cancel switch and volume are seperate cables with the 3 pin connector on the mute cable. On my spare amp most caps have been replaced and there is slight distortion on the guitar parts of the record i thought it could be caused by a weak cap.There is not many experts around my area.
i would like to have
von - by
bopper
-
Alles rund um Musikboxen
Hi Jurgen
thats cleared up my problem with the polarity of the caps, thanks, i realise now that the mute circiut in the amp is independent and has no connection to grd in the amp, got it!! at last am i right ? i meant to ask there is a dual 50 / 50uf 50v cap n the amp this is a paper type so i am going to replace it with 2 new these would have to be 47uf or 63uf 63v so am i better wit
von - by
bopper
-
Alles rund um Musikboxen
Hi Marc
thanks for your post, me not being into electronics tho i was an electrical contractor the installation
of electrical work is totally different, so i am trying to get my head around what you all explain , with the + side being ground which i now understand, i think my problem is when i look at the amp (34725-A) schematic, now knowing the grd polarity and seeing the electrolitic caps wi
von - by
bopper
-
Alles rund um Musikboxen
Hi Jurgen
thanks for explaining the circuit, it is hard to think grd being the positive side when you have always thought grd as the - side of a circuit, so thanks for clarifying the circuit and all the help with this, ,i wil re-install the amp probably at the weekend i will let you know reults
take care
regards
mick
von - by
bopper
-
Alles rund um Musikboxen
Hi Jurgen
thanks for the full explanation, i am going to stick with the stock relay ( thanks for advice on this) now i have soldered the coil wire it seems ok , i will replace the diode and then put the amp back in the box
and test that it's workig ok, i will post after testing, thanks again to you and Charly49 for all your help
it's very much appreciated
best regards
mick
von - by
bopper
-
Alles rund um Musikboxen
Hi Jugen
if the relay coil is energised when the power is on, it therfore could be on for long periods between any selections being made ,does this not cause temperature problems in the winding of the coil?,thanks for the schematic, is it in the rockola manual for these models (1484/ 430 etc) as i cannot find the page in my copy,if a replacement relay had a lower resistance than the original in
von - by
bopper
-
Alles rund um Musikboxen
Hi Jurgen , Charly49
thanks for input, will using the 270uf cap with the slightly uf make any difference to the mute operation or like Jurgen would it be better a lower uf, so reading what Charly say's the relay is energised with the contacts closed until a selection is made and a record is ready to play, i think !
cheers
mick
von - by
bopper
-
Alles rund um Musikboxen
Hi Jurgen
i also replaced the 250uf cap with a 270uf 63v and think i may replace the diode tho the original tests ok
the forward bias is 0. 895 v which is a little higher than for a silicon one but i don't know the specs for the
E-45 c-150 original, i may get hold of a replacement relay just to do some bench tests and check results
cheers
mick
von - by
bopper
-
Alles rund um Musikboxen
i did the test on the stock relay reduced the voltage from 24v and the relay only released when the voltage was as low as 7.4v, i tried in reverse from zero voltage the relay energised at 17.2 v .i was suprised at it holding in at such a low voltage, i am not sure of all data on the aftermarket relay but i will check
now looked at the data it is dpdt but the slight problem it is PCB moun
von - by
bopper
-
Alles rund um Musikboxen
i have managed to solder a wire to the short end of the relay coil and i applied 24dc and the relay operates ok ,i will change the diode with the part 1N4001 as Marc mentioned. I did source a replacement relay with a similar spec as the orignal ,coil resistance 1440 ohms 24vdc but now the orignal ok no need to bother
cheers
mick
von - by
bopper
-
Alles rund um Musikboxen