Beomaster 1900 Type 2904: Capacitors replacement Part 1

Most of the electrolytic and tantalum capacitors have been replaced on this Beomaster 1900 now. That replacement was long over due and badly needed. Over eighty percent of the capacitors I replaced measured out of tolerance or completely dead.

I will start with a couple of pictures showing the recapped main board.

Being packaged into such a low profile cabinet the Beomaster 1900 circuitry is mostly on one big board (labeled module 2 in the service manual).  There are a few other small boards with a few electrolytic and tantalum capacitors but the majority of the task is the large module 2 board.

The capacitor replacement was pretty standard....desoldering, measuring and replacing one capacitor at a time. It takes extra time to measure the old and new capacitors but I like to know that information on each restoration.

The Beomaster 1900 did have a couple of capacitor replacement tasks that took some extra work.

The reservoir capacitors 0C7 and 0C8 don't have a bracket to hold them and utilize the original capacitor's large, flat terminals to connect up all of the ground and power lines to them.

To make that task a little easier I mounted a terminal between the two grounded posts of the new reservoir capacitors to secure them together. I also added multi-tab terminals to the two posts for the power wires.

This Beomaster 1900 has a modification not shown in my service manual in the left and right volume related circuitry. This board wasn't in the previous Beomaster 1900 project I did.

This picture shows the small mod board attached to the main board.

There is one lone tantalum capacitor in the FM tuner (metal) box that I replaced.

The volume control board has two small tantalum capacitors that I also replaced.

The last couple of pictures show the replacement of the +15VDC power supply capacitor 2C92.

That just leaves the capacitors on the tone control and FM tuning control boards. I will show that on the next blog post for this project.