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Old 26th Oct 2020, 1:22 am   #8
Lef de art
Pentode
 
Join Date: Oct 2019
Location: Nicosia, Cyprus.
Posts: 165
Default Re: McMichael 381 Valve Radio project

And the project is completed !

I have check and change 11 paper capacitors (was all leaky) and unfortunately it was necessary to change and the electrolytics but without to removed them....

The radio has unbelievable powerful sound with nice bass.
It receive strong signal in all bands long, medium , short.
I used it already several hours and it is extremely stable.

I haven't meet any problem with the repair process. After capacitors replacement it worked immediately.

The only 2 minors problems I have are...

1) The radio it has 6 station button presets . This 6 buttons are adjusted each through one screw .
I have found stations through this but the signal is extremely week and the external antenna dose not change nothing.
It gets much louder only when i touch the 6 button chassis.
This happens only when i choose the presset buttons function.
Otherwise the Radio works perfectly and extremely powerful.

My second problem is in the first front left switch.
This switch has 4 selections
-high fidelity
-Normal
-Bass
-Foreign

When i chose the foreign nothing changes... I believe this happens because one wire of the switch it was detached and i can't configure where his position was

I will upload pictures with the cable and with the Radio .
Unfortunately i can't read the schematic ...

Sorry for my English....i try my best
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