[Premium-Rx] Need Help for Mackay MSR-5050

[ToddRoberts2001 at aol.com]

Hi all,
I recently bought a nice-looking  Mackay MSR-5050 that was stated to be in 
good working condition. When it arrived  unfortunately the power transformer 
shook loose during shipping and was floating  loose in the chassis.  The power 
transformer was mounted to the left side  panel looking at the radio from the 
front and near the rear left corner of the  chassis.

Damage appeared to be one broken wire to a bridge rectifier  block mounted 
next to the transformer. The transformer itself looks OK and looks  like the 
wire leads kept the transformer from 'roaming' too far in the chassis  and damage 
looks minimal. Fixing the broken wire should be easy.

One  problem that looks a little more serious is right under where the 
transformer  was mounted - on the bottom mother board - there was a row of what 
looks  like  to be 6 glass diodes mounted on the topside of the mother board. All  
the glass diodes were smashed. Next to the glass diodes is what looks to be 
an  accessory socket on the motherboard. 

I was wondering if there are any  members that may have an MSR-5050 and know 
what those glass diodes were for and  what part numbers they were? It doesn't 
look like too serious a job to replace  them if I knew what they were. I would 
guess they might be small switching  diodes. Perhaps the accessory socket was 
for a preselector and the diodes  switched in different bandpass circuits?

If anyone can help with any tips  or info it would be greatly appreciated. If 
someone could steer me to a manual  or manual copy that would be much 
appreciated also. Thanks!

73 Todd  WD4NGG  




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