Zeige alle Beiträge eines Teilnehmers
Hi Hefter
again thanks , i can safely say i would not have cut any cables only the short link, which you call the bypass, all the tests i have carried out for NO + NC connections have all shown good readings ohm wise all the NC are less than 1 ohm, NO contacts when closed via the button again excellent readings no resistance ,
after further scrutinising the soldered joints i have re-sold
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Hi Jurgen
your very last idea makes sense, but with the keyboard being out of the JB and easily examined i can see the slides fully moving when the lever is pushed fully in, but i cannot see if the slides are making good contact with the pinch terminals lower down, i can see the top contacts which make contact ok, to test your idea which link would i cut the tan/green or the grey/yellow or b
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Hi Hefter and Jurgen
i have checked and tested the continuity of all the wires from keypad to connectors all ok, checked
green and green / white for correct position , checked soldered terminations for loose or dry joints
these all seem fine, i will plug the keyboard back into the JB and see if anything has changed regarding making the correct selection posting results
regards and thank
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Hallo Hefter
Vielen Dank für die Info, ich werde die von Ihnen erwähnten Überprüfungen durchführen und die Ergebnisse veröffentlichen
Grüße
mick
Hi Hefter
thanks for the info , i will proceed to do the checks you mention and post the findings
regards
mick
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Hi Hefter, wecome to the problem, i have tested all the wires to the 21 pin jones plug and the 12 pim connector from the selctor button panel and all had good continuity, i could do Jurgen's tests from the connectors as a 2nd check, i have another button selector unit connected to the JB which is working 100%
so i think all the JB wires and connectors are fine,thanks for the idea and i wi
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Hi Jurgen
so am i , but i must say a big thanks for all your inut and time spent trying to sort it out a great help,
would doing tests on the letter side be worth while ?
cheers and regards
mick
Hallo Jürgen
Ich auch, aber ich muss mich ganz herzlich für all Ihre Mühe und Zeit bedanken, die Sie damit verbracht haben, eine große Hilfe zu finden.
Würde es sich lohnen,
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Hi Jurgen
test readigs
yes the JB works 100% with the other keyboard, the tests are,
tan/green to green closed (short) and opens when 9,7,5,3,1 are pressed but is closed when 2,4,6,8,are pressed
green/yellow to org/blk closed, closed when 9 / 0 pressed ,open when buttons 1 to 8 are pressed
are these readings correct ?
cheers
mick
Hallo Jürgen
Test Readigs
ja
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Hi Jurgen thanks to your drawing and testing order i completed all the tests as in your posting and everything test out as you say, on the closed contacts a minimum resistance, open contacts fine, so i cannot understand the problem as all the test are ok
regards
mick
Hallo Jürgen, dank deiner Zeichnungs- und Testreihenfolge habe ich alle Tests wie in deinem Beitrag abgeschlossen und alles
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Hi Jurgen
i think what is confusing me is the "bypass" is this the soldered link at the 9/0 end between the top end terminal and the terminal below, ditto the 2 terminals on the bottom 2 rows off connections, i tried sending photo but it does not allow because of the size or i am doing it wrong, anyway i will do the testing as you describe and post findings, hopefully
thanks a
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Hi Jurgen
thanks for your help and patience , i will now carry out the tests as per your instructions , one point ,is the schematic for the 431 the same for the 430 ? i will make sure the buttons lock down when testing ,i may energise the solenoid so they are properly locked , i will post results when complted , thanks again
i owe you a few beers
regards
mick
Hallo Jürgen
Vielen D
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Hi Jurgen
i have done some tests on the selection assembly but i don't think i am doing this correctly, i found that between the 5 parts 1/2 3/4 5/6 7/8 9/0 and the corresponding terminals below open circuits, if i then push say number 1 button this now closes between part 1/2 only , then push no 2 button and this closes again across part 1/2 but also terminal for numner1button ,this
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Hi Jurgen
i will follow your info for the testing, you are right about the schematic not much speci on this portion of the JB, should the resistance between these points be low when button is operated and N/O when not
thanks again for your help will post findings
regards
mick
Hallo Jürgen
Ich werde Ihren Informationen für den Test folgen, Sie haben Recht mit dem Schaltplan, der nicht vie
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Hi Jurgen / Charly49 +interseted parties
carried out the adjustments to the lock bar but no change, so i removed the 12pin plug from credit unit and unplugged the jones plug, i then plugged in a spare (old) selector button assembly, leaving it loose on the side of the JB, i made a few selections and they al selected properly,so i have removed the exsisting button assembly completly so it is
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Hi Jurgen & Charly49
i wil carry out the adjustments as described and post results hope this is the answer i do not fancy stripping the boards, thanks to both i will let you know results
regards
mick
Hallo Jürgen & Charly49
Ich werde die Anpassungen wie beschrieben durchführen und die Ergebnisse veröffentlichen. Ich hoffe, dies ist die Antwort. Ich habe keine Lust, die Bretter
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HIi Charly49, thanks for your input
the buttons definitely lock in when pressed, my 430 does not have a stepper, as the selection buttons sometimes select the correct record i am wondering if the number buttons are not always making contact with the slide contacts inside the number board,maybe i need to strip the board and check contacts inside
not something to look foward too
cheers
H
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Hi Swen thanks for input, i check record playing by the window,by basket no and i know which order the records are in,yes A1 is the first record after home position, i have done the test you suggest i am not sure
how to find the info and pics on archive pages
A1=A0
A2=A0
A3-A0
A4=A0
A5=A0
A6=A6
A7=A7
A8=A8
A9=A9
a0=a0
Hallo Swen, danke für die Eingabe. Ich überprüfe die Wiederga
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HI Jurgen and all
carried out more tests and these are the results
Hallo Jürgen und alle
führte weitere Tests durch und dies sind die Ergebnisse
ausgewählt plattiert
selected plated
G1 G0
E2 E0
D3 D0
H4 H0
F5
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Hi Jurgen
i have done the resistance test between the 5 wires (all combinations) and they all open circuits between
so no sign of short circuits on this test, so do the results help solve the problem
regards
mick
Hallo Jürgen
Ich habe den Widerstandstest zwischen den 5 Drähten (alle Kombinationen) durchgeführt und sie alle öffnen Stromkreise zwischen
Bei diesem Test gibt es
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Hi Jurgen, your a gentleman thankyou for the photo and the info on how to check i will do the resistance tests tomorrow and post the findings, grateful for all the help and your time
regards
mick
Hallo Jürgen, Sie sind ein Gentleman, danke für das Foto und die Informationen, wie Sie überprüfen können. Ich werde morgen die Widerstandstests durchführen und die Ergebnisse veröffentlich
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HI Jurge, i did test in ascending so i understand what you mean ,i will test as you say, do i need to unplug
the jones and the 12 pin plug from the selector unit before doing the resistance test , should this be an open circuit across the orange wires, thanks again for all the help
i have just selected E5 followed by E4 and both selected, ok does this help?
cheers
mick
HI Jurge, i
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Alles rund um Musikboxen
Hi Jurgen and all, i have adjusted the write -in carriage it seems ok now, i have selected every record both A and B side all of them from A1 to K0 made the correct selection so i thought happy days, put the JB back together closed the top door selected E3 to check and the box played E0 so i'm back to square one, i'm wondering if there is a problem with the wires in the harness from th
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HI Jurgen, thanks, i will check that tomorrow and will post results , grateful for help again Jurgen
regards
mick
Hallo Jürgen, danke, ich werde das morgen überprüfen und Ergebnisse veröffentlichen, dankbar für die Hilfe, Jürgen
Grüße
mick
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Hi Jurgen , thanks for the info,since i posted i have opend the male / female 21 pin jones plug and cleaned the pins and it has made a difference , when selecting a3 thro to k3 these now select correctly
there is one thing that is happening now, if i select D5 this is selected and plays after it is returned to the basket F5 is selected and played without being selected as is H5 if F5 is selec
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Hi Swen, i have checked all the connections and they are all ok and all the select buttons operate ok
i cannot understand the problem , so thanks for your input
cheers
mick
Hallo Swen, ich habe alle Verbindungen überprüft und sie sind alle in Ordnung und alle Auswahltasten funktionieren in Ordnung
Ich kann das Problem nicht verstehen, also danke für deine Eingabe
Prost
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Hi
i am having a selector problem with my 430, if i select any selection on A3 to K3 the box selects the correct letter but at 0 example select C3 then C0 is selected and so-on from A3 to K3 all correct letter but 0, if A0 to K0 is selected these are played correctly it is the A3 thro to K3 that not selected .the printed circuits on the wooble plate have been cleaned, all other sections are ok
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Hi Seeburg19
i probabaly was not too clear in my postimg, i mean the main shaft that runs from the basket to the read-out wiper, the diameter of this shaft is approx 0.56 inch compared to the shaft on my 430 which is approx 0.76, this means that my spare write-in wiper , selector plate and read=out wiper are to big a diameter for the shaft, so is this a earlier shaft and chassis, hope this
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Hi all,
i have obtained a bare mech chassis (but with the main drive shaft), supposedly from a rockola 430 , but the drive shaft dia is smaller than my 430 shaft can anyone say which this chassis is off could it be the 1484 ? any info please
regards to all
mick
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thanks Jurgen, it shows how a small problem has you spending hours looking for a fault, so it is a big thanks for the all info and your knowledge
til next problem
best regards
mick
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Hi Jurgen
i removed the complete tonearm from the JB to test the wire /plug checked the cartridge/stylus all ok then i noticed a wire (tail) from the ground on the cartridge to the fixing screw on the base for the cartridge, removed it re-installed the tonearm played record and no hum don't know why but it's gone
have you a reason why?
best regards
mick
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Hi Jurgen
i have started checking all possible causes and will post if i find the problem, thams
best regards
mick
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