cossor melody maker 524

[Steve_P]

I always start at the mains plug and work my way though to the aerial, taking in all the scenery on the way.

There's an earth off somewhere I hope. Otherwise it's the control.

Cheers,

Steve P.

[tiv48]

not with my luck on this one oc track more like.
i has been one of those days.
i have also found the voltage at the cathode of the el84 ig 6 volts high time to check the bypass cap.
rob t

[tiv48]

    10 out of 10 for mark
difficult to see but wire come away
rob t

[tiv48]

ok getting further before resoldering the earth wire i thought i would check c 24 it was leaky.
now you may ask why i had not done this befor as its the audio coupling cap (that cap ) well because its a bumble bee cap and they never go wrong
well now all voltages on output valve are ok and no distortion.
oh well onwards and upwards

[tiv48]

well at last this set is sort of done.
i have good reception of fm i did have to change an other bumble bee cap on the fm tuner head.
am works quite well not shure if agc is working properly.
basick check on am alighnment showes its ok
i had to re replace c 49 i had put in 47mf now changed to 22mf louder now.
what have i learned from this repair.
1.dont go back to some thing after years you forget what you did and why.
2. dont trust bumble bee caps ,as bad as waxies and hunts.
3.try and keep away from sets with complex dual wave change swiches.
4it does not matter how many spare knobs you have ,you will never have the one you want.
5.dont guess conponent values look at the circuit and under stand the component you are changing.
6 double check all the work you have done .
rob t

[Mark R]

Nice one Rob, your check list corresponds with mine, especially 4, 5 and 6!

cheers Mark