bush vhf 81

[tiv48]

I had been looking for a bush vhf 90a with out luck.
a friend said his gran had one but when I went to look it turned out to be a VHF81
well I did not have one of them either so £10 changed hands and now its mine.
she explained that it had gone bang about 20 years ago .
they had taken it to a bloke up the road who told her he could no fix it as the knobs were seized on.
sadly his attempts at removing them had cracked the dial glass.
It was then put in a cupboard .
Removing the back showed a chassis in remarkable condition.
first job was to remove the chassis (5 ba bolts).
If the boke up the rod had this he would of found the knobs are held on by grub screws!
the reason for the BANG was obvious C6 (mains filter ) had blown one end off.
As this set has tcc wax and brown and black hunts caps I thought it expedient to check them with out fail they were leaky or very leaky so they were all changed,
this is not something I would normally do but experience on other bush sets suggested that it would be necessary.
the smoothing block reformed quite quickly (maybe too quickly?).
next step is to apply mains.
Rob t

[pwdrive]

That is a nice clean chassis, shame about the dial glass, is it bad?

Lawrence.

[tiv48]

Ok replaced the mains plug fitted with a 2 amp fuse and plugged in via a lamp limiter .
After 3 minuets hiss from the speaker so the audio stages are working ok, left like this for 15 minuets to see if anything was distressed.
As all looked ok I gave it full mains and am glad to say it all works well
the damage to the dial is where the volume comes through .
A wipe over the cabinet with meth's and it looks good.
PS after reassembly I found the RF filter cap that I was going to fit ,will do this if and when I can find a replacement dial
rob t click link to see video of set working aerial for vhf is sets internal one
http://s1095.photobucket.com/user/tiv48/...e.mp4.html