Dismounting all mechanics

Today I worked the whole day with dismounting the record magazing and the Gripper machanism. The Gripper was almost impossible to remove as it was faulty engaged and it was stuck on its center shaft as the grease hard like glue.
But with my heat gun and WD40 I was able to "melt" the frozen grease so the outer green cogwheel came loose.

Mechanics are so dirty and rusty so I wounder if I ever will get this piece of crap to work....?

The Record Magazine needs a major cleaning/painting and the 30 tabs/springs on the outside of the magazine will not be so funny to refurbish.

Trying to get the amplifier to work

I started to connect the power supply to the amplifier and activated the two relays with to thin pieces of paper. To get some music I used my Iphone, and wired up the three speakers in the 1458 cabinet.
But silence was everything I could hear.

I got some help from my friend Göran who told me that the volume control also must be connected. The volume control with it's cable was found but unfortunate the potentiometer was broken, anyway I soldered it as a qiuck fix. I have to order a new one asap.
Great! Now I have sound but the base is very thin and there is an extreemly disturbing hum from the amplifier, not good at all!

So next step is to get the signal from old ceramic cartridge so I can have a similar setting as original.
As my turntable is in a really bad shape I borrowed an -66 turntable from my wife and connected it to the 1458.
The cartridge is a Ronette 105 crystal and to my suprise the sound was better then I expected it to be. The base tones was maby a bit on the low side but except from that the sound was great.

Play the video!

I thought the humming came from the PEC or near the first tube as the noice followed the volume control. But it was a bad grounding soldering under the new electrolyt set that caused the hum. As soon as I resoldered it the hum was gone.

Rebuilding the Rockola Control Box 31115-A

I cleaned and measured the relays, connectors and switches, all of them seems to work!

The two old capacitors was replaced, one of them had loosen its capacitance so the replacement was really needed here!

I 3D printed a new nylon knob as the original knob was missing.

Recapping and rebuilding the Rockola amplifier 31451-A

As I bought a quite fresh amp I dont need to do anything on the outside except a little cleaning.

I decided to replace all caps and resistors just to be on the safe side.

I found new components at Elfa Distrelec https://www.elfa.se/, the shop is just 3-4 km away so I can easily go there by bus to grab what I need.

The two large 20 uF can electrolyt capacitors was replaced with six 22uF 450V.

I used a small blank circuit board for soldering all the caps and resistors.

I also replaced the PEC component with fresh new components on a circuit board 

All "small" components except the red diode and four large resistors was replaced.

After I replaced all components I measured them and I almost all was ok regarding the values so I assume the replacement was not needed at all!

I at least know the components will last the next 10-20 years.

Rebuilding Rockola Power Supply 31460-A

This weekend I did the Power Supply.

It was a piece of a cake this time as I have done almost the same on my Wurlitzer from -59.

The two capacitors and the rectifier was replaced with new parts, I also cleaned the relay, connectors and checked/replaced the four fuses.

Inside the PSU before rebuilding.

I removed the PSU cabeling and painted the PSU

Nice and clean with a new Silicon-Bridge-Rectifiers to the left.

I drilled out the all the rivets and replaced them with polished stainless steel screws,

 added waterslide decals as a replacement for the screenprinting.

Looks almost as new :-)

Rebuilding the Rockola Accumulator 31251-A

I opened up the credit unit for a major cleaning, measured all coils, cleaned the switches, but it was impossible to get the cogwheel to work when the solienoid kicks in for counting down the credits, until I realized I missed the tiny tounge and spring that mounts on the solenoid tab.

Suddenly I remember that the seller gave me a part just before I left him and said "you will need this when rebuilding......"

I remember the words he said and looked in my boxes with one million parts parts, YES!!!

 I found the tounge/spring  in a small plastic bag!

I have also ordered new electrolyt capacitors and will swap out the 60 years old capacitor can.

The tiny tounge/spring

Mounted here:

Jensen woofer is making scratchy noice

I thought the Jensen woofer was good, but after mounting the two 12" speakers the woofer starts scratch when I raise the volume. Guess the voice coil rubbs against the magnet structure. So my option is to rebuild the woofer or found a new one......I found a new one today, just 2 km from my home :-)
It is a 12" Bozak B-199Bc, this is a vintage high quality speaker, (from US I guess?)
Weight is around 5kg, it have a large Alnico? magnet , and the cage is aluminium casting.