Check your wiring color combination carefully! I know this is seems basic, but some units have been modified a few times: wrong wire, wrong screw on terminal...problem! Both Cue-Master and Studio-Pro Model B were occasionally wired with different color combinations. Some of the units used antenna rotor wire encased in a plastic cover with beige, black, green and red. Others were wired with white, red, black and used dark brown, white and orange on the 33 & 45 lights. We suggest you go back to basics; most of the wiring can use an upgrade after all these years! Simply start at the 4-gang terminal block (input 120VAC) and wire from point-to-point as the originals were hand wired. Use care when soldering the small "cap" and resistor: they can be damaged by excess heat!
INSTRUCTIONS FOR OPERATION OF 2 SPEED TRANSCRIPTION TURNTABLE
STUDIO-PRO Model B.
Original instructions supplied with STUDIO-PRO MODEL B.
RUSSCOturntables are shipped completely assembled. The motor is fastened rigidly in place with shipping bolts to prevent damage to motor and motor shock mount supports during shipment. These shipping bolts should be removed and discarded before turntable is put into opera- operation. When ready for operation, the motor should float on shock mount supports. All material such as packing blocks and cardboard should be carefully removed and discarded. INSTALLATION:120 volts at 60 cycles should be connected to Red terminals on terminal block beneath turntable chassis. If the use of a remote switch is desired, then the wiring from the remote switch should be connected electrically in parallel with the switch on the turntable chassis. The turntable chassis should be fastened solidly to operating cabinetry or console desk Do NOT place foam or padding under rim of main deck in the same way some Gates units are mounted!.TONE ARM INSTALLATION:Any high quality tone arm can be used with Russco turntables. The tone arm mounting plate has been provided on this model in order to make tone arm instillation and replacement easier. The plate should be removed in order to do any drilling. Dimple markings have been provided to show hole positions. The dimple marking at the far end of the plate is 8 and 5/16 inches from the center of the platter. This is the distance most often recommended for the mounting of most tone arms in 12-inch length. THE POWER DRIVE SYSTEM:This turntable is driven by a CAPSTAN and idler drive system. The speed of the table is determined by position of the idler wheel in the capstan steps. Variation of speed will not occur as the idler wheel wears. Variation of speed or wowing can occur if oil is allowed to get on the idler wheel. Excessive use of oil while lubricating the table or failure to use care while oiling the table could be the cause of this sort of trouble. If this does happen we suggest cleaning of the affected parts with denatured or isopropyl alcohol. The idler wheel can be expected to last at least five years*. Exposure to atmospheric smog will shorten the lifetime expectancy of these two parts drastically.
[Under/with nominal use. If idler is adjusted correctly and NOT left in-gear when off, left in the neutral position Idler will give years of trouble-free service!]
*Original verbiage taken from and used by permission of Russ Friend, (RUSSCO ELECTRONICS MFG., INC). Where information is added due to updated material "ADDITIONAL" instructions will be inunderlined Italics.
RUSSCO STUDIO-PRO-MODEL B
SPEED CHANGE:The two speeds "45" and '33" are selected by putting the speed change Lever in either the 45 or 33 position.. When in the proper slot, the speed indicator fight will operate and the turntable will be driven at that particular speed when the motor switch is turned on. A neutral position has been provided between slots in the front cover plate and when the turntable is not in use for an extended period of time (such as 24 hours*) the speed change lever should be left in this position. This will prevent "flats" on the idler.
*If at all possible NEVER (under most circumstances) leave the speed lever in gear although some situations necessitate this being done. If vinyl is "pre" or back-cued and started from a relay switch on a broadcast boardor pre set to segue/mix with another disc. If table is not going to be used after vinyl is played or "after shift" and switching to tape, do yourself a favor and take out of gear! This "suggestion" basically no longer applies in most situations because the units are used rarely in most broadcast areas. If you are a collector or enjoy using idler drive units you already know not to leave these units in gear. If you are new to idler drives, removing from gear is a good "habit" to get into!
ADJUSTMENTS:Each of the slots has an adjustable stop, which limits the travel of the speed shift lever. These stops are adjusted by the use of a small screwdriver through the adjustment holes in the front cover plate. If adjustment needs to be made, follow this procedure: Screw in (CLOCKWISE) until motor ceases to drive table, then, back out the adjusting screw slowly until enough pressure is applied to give satisfactory acceleration and steady platter speed. With a little experimentation, the correct adjustment will be arrived at. An adjustment of this sort should last for months. LUBRICATION:The main bearing or platter bearing is composed of a sintered bronze bearing and will not require oiling more often than every four months. At these intervals, the platter should be removed and the shaft should be wiped clean of all oily residue. A clean lintlesscloth should be wrapped around a wooden dowel and inserted into the bearing well. The residual collection of oil should be removed in this fashion. Do not use solvent. Shaft and bearing should be relubricated with any standard Grade 30 motor oil* and reassembled. * A small bit of Lubriplate may be applied to the captured bearing in the platter shaft which sits against the height adjustment bearing within some units. THE IDLER WHEEL / WHEELS: The idler wheels* seldom need lubrication due to the fact that they have sintered bronze bearings that supply their own oil for long periods of time. Rotational speed is slow and the Idler wheel may never need relubrication during the life of the turntable. It is possible for these idler bearings to collect dirt. Under these conditions the bearings will get gummy and the idler wheel may not turn freely. This could cause the table to slow down or wow. If this should happen, the idler wheel should be removed, and the bearing cleaned with a cloth (NO SOLVENT) and a few drops of oil such as ordinary 3-IN-1-Oil or Shaler Rislone applied to the bearing. Idler may be reassembled and many more months of operation should pass without a problem. Eventually the surface of the idler wheels will become hard and glazed and may need replacing. * there were a number of Russco models made with dual idler wheels, information will be posted shortly. BODINE SYNCHRONOUS MOTOR:These motors are equipped with sintered bronze bearings and do not need frequent oiling. An oil reservoir is provided, however, and we do suggest forcing a few drops into this oil reservoir every six months. The oil cups are hard to get at because they are very short "Flip-Caps" and lay horizontally. Use No.10 oil* of a good non-detergent grade. A plastic tube on the oil can spout will make this chore easier.
We are stocking small plastic pint-size bottles in house, which will last many, many years.
IDLER DRIVE SURFACES:It is extremely important that the driving surface and the inside of the platter rim be kept clean. This is particularly important during the first few weeks of operation. These areas should be wiped clean with isopropyl or denatured alcohol* every few days for the first three weeks.After this period, the cleaning procedure need only be done every thirty days.
*CAUTION: alcohol fumes, spilled liquid and electrical systems DO NOT MIX! FIRE Hazard!*
Partial Update 04/26/2018 1630UTC
Located in the U.S.A.
Email:parts (at) RusscoTurntables.com
RusscoTurntables.Com--a division of ValleyRidge Audio