R-92

[jimbowlie]

Pulling my hair out   I was listening to my R92 one day and the the lamp control shorted out or something.  The lights don't work and (more importantly) I am getting zero sound or feedback or hum.  I checked the power supply the caps all are fine.  I shorted the vol control and checked the preamp board at pin 3 and touched the phono input shows, 1vdc both channels.  The fuses are all intact.  No sound, quiet as a church.  I was wondering if the rectifier could be blown or maybe you all have other ideas.  The ccc works the and tried my back up in for good measure.  I also replaced the entire mech and mech control board just to make sure.  chirp chirp... Also, is there a possiblility that the output transformers could be blown?  Thank you in advance.  I love hearing you all chat!  P.S. Rowe was smoking dope when they designed that lamo control...  I burned through three of them in 10 years.

[ami-man]

Hi Jim,

I guess you have taken the sound to light unit out of the jukebox for now.

The molex plug/plugs for the has always been a problems with these units,down to dry joints (cold joints in the USA) and this is made worse with people putting the incorrect voltage or wattage lamps into the lamp holders.

You need to check the 110 volts lighting circuit to see that you are getting power also check the amplifier socket for power. If all the power circuits (including the 28 volts AC, 28 volts DC and 8 volts DC) are ok the fault on the lamp control may have put a fault onto the pre-amplifier.

Check that you are getting the DC supplies within the amplifier, check with the schematic in your manual.

Regards

Alan Hood
ami-man
UK

[jimbowlie]

Wow, how simple things become when you leave them all together and test them that way.  I tested all components on there own and they all worked (which means I failed).  I put it all back together and the problem became far more obvious.  The power supply passed all tests for voltage and everything passed in the amp.  Plug the amp into the power supply and the voltage disappeared.  The contacts were not allowing proper seat for the amp male plug.    The sound to light board I replaced with a partially working module and they are back and running (without flash).  I would never have gone back to check what I had checked three times and I still wonder how I failed to get my backup power supply to work (ghost in the machine).  I looked at the sound to light module and sure enough there were 3 out of 4 dry joints (cold, or hell call it what it is bad solder).  Thank you so much for your quick response and I have to ask the same question another has asked on another string.  I talked to Rowe international about getting a shop manual for R92-R94 any of them.  Got zero help and they won't talk to you if you aren't an operator.  So any of you operators please if you have a chance I would like to buy one through you and I'll tack on some extra cabbage for you troubles.  I searched everywhere including a few of our closest planets to get a schematic for the light module.....  It is like the unicorn!  Hope it is in the shop manual.  Jim

[jimbowlie]

P.S.  I never over tax the sound to light module or power supply I always use 11 watt bulbs...

[Ken Layton]

You can buy the manual from www.victoryglass.com or www.alwaysjukin.com

# 70-5769 (R-559) Rowe model R-92 Field Service & Parts Manual, 184 pages, $39.95

The lamp circuit was designed only to use 11 watt "Sign" lamps. Never use compact fluorescents in them or you WILL damage the lamp controller.

[ami-man]

Hi Jim,

The schematic for the lamp controller is not in the Field Service Manual part number 21822610, you would need the brown shop manual for that. Sorry I do not have the number for that.

Regards
Alan

Alan Hood
ami-man

[Ken Layton]

The "Shop" manuals are not reproduced, but can be purchased from your local Rowe distributor's parts department.

Here is picture of one.

[jimbowlie]

I can not get any one to order the brown shop manual...  I would be very happy to purchase one but am unable to find any one who confirms there is a schematic that is for the lamp control for R-92 - R-94.  The Victory glass has confirmed (to their knowlege) that from their end, the only shop manual they can get is the R-90 - R-91, and of course as we all know from the horse beatings in countless strings of information and requests... the lamp modules are not the same  from the 90,91 to the 92-04. Sooooooooooooo,  Any one out there who may have the ability or resource to get the brown shop manual, I will be happy to send you some financial love and a sincere nod of gratitude.  Jim

[ami-man]

Hi Jim,

Please let me have the Rowe Ami part number off of your lamp controller and I will see what I can come up with.

The number should be 40821201.

There is one of these for sale on Ebay the seller thinks it is off of a Rock Ola but it is the correct number. Item number: 330350265231 BIN £15.00 (will post world wide)
I have checked the world wide listing on Ebay the above is the only one.
You could try www.jukeboxparts.com or see if Bruce Wentworth has one.

Regards
Alan Hood
ami-man
UK

[jimbowlie]

You are correct with the number for the lamp controller.   40821201 The referral information for schematic is 61022901-Q2 and I am awaiting quote for shipping on lamp controller in UK. (as is untested).  Sure wish I could find that schematic.....

[jimbowlie]

Well,.... this is embarrassing.  I used a 1/8 in male plug and soldered to 3 clips in a molex plug and plugged my MP3 player to the microphone input.  Works like a charm as long as mute is unplugged.  While I was yanking stuff out in my trouble shooting the  (insert expletive)ing lamp  controller...(lol) The pin order has become lost to me as the contact pins have come out of the molex.  Any one remember the which is L (left) R (right) and G (common)?     Microphone plug in preamp board (60792505) looks like    x x x - - x  and I will for my sake call L to R pins 1,2,3, (2 blanks) 4.  Getting old is a terrible thing...lol