Before I Drive Myself Nuts!!

[Bushbaby]

Thanks Paul!

I've decided to watch I'm a celebrity get me out of here instead!

Regards

Rob

[Skywave]

I've decided to watch 'I'm a celebrity! Get me out of here' instead!
Rob

I heard a rumour that it's only non-celebrities who are allowed in here, (which, if you think about it, explains a lot ). So please folks, don't crank my reputation score any higher!
Ta.

Al.

[Bushbaby]

Guess what - even worse, its not on because of the football!! I watching an episode of the New Grimm series instead.

Regards

Rob

[Yorkie]

Guys,
I think I've finally lost it!!
Just to recap (excuse the poor pun) I have replaced C51 on the trader sheet with a suppressor cap - correct or not. C60 on the trader sheet is the 0.5uF silver picopack type cap - I did think that this was an electrolytic and to be honest I haven't taken any notice of it whatsoever!

Help, I feel I'm slowly drowning in treacle!!

Rob

Where the maker's have a sheet, as is the case for the Bush VHF90 Rob, you're better off with that than the Trader sheet as the maker's is usually better, as is the case with the DAC90A and the VHH90, for which the Maker's sheet runs to 10 pages - the Trader sheet to just four. Also - as is always the case, they use different numbering which causes confusion when various people chip into a thread. To try to clear any confusion in you mind, this might help:

C60 on the Trader Sheet is in fact a 50uF smoothing cap, combined in one can with C55 - also 50uF. On the maker's sheet, these are numbered C54 & C48.

(C51 on the trader sheet is 0.04uF. I'm not sure where that comes into the scheme of things).

The cap which needs to be either cut out altogether as it will make no difference if it's ditched is C60 on the maker's sheet, which is C66 on the Trader Sheet. Namely, the modulation hum suppressor cap across the mains input - the one which often goes bang. If you delete it, you'll not notice any difernece or detriment in performance of the set (when it's finally working), but if you prefer to replace it, then it needs to be a class X cap. It was originally 0.05uF, no longer a preferred value, so you'd need to replace it with a 0.047uF.

If you follow Steve's suggestions stage by stage you should get there in the end. Personally, as I check or replace each component or check coils etc for continuity, I makes notes, and draw over that part of the circuit with a highligther pen, so I don't keep going round in circles.

Hope that helps a bit.

Don't get disheartened - it's a hobby after all - not one more thing to get stressed out about

Best of luck.

Night night!

[Steve_P]

Bushbaby - don't touch it for a couple of days. It won't eat anything after all and it's probably been out of action for years, so another few days won't matter.

Do something else for a couple of days and then come back to it.

Cheers,

Steve P.

[Bushbaby]

David and Steve,
Many thanks. I'm not disheartened but this does appear as Joe put it, one that just doesn't want to be restored (although I am learning oodles from this one).
Just one point though - should C51 just be a 0.05uf tubular cap which it was before I replaced it with a mains suppression cap!! Therefore I could put the cap thats in c51 at present in there (or probably not as you are suggesting!)

Regards

Rob

[Steve_P]

Which sheet are you using?

Cheers,

Steve P.

[Bushbaby]

Steve
Using the service guide but from tonite I shall use the trader sheets.

Thanks again (and for persevering through my restoration which is very much appreciated).

Rob

[Steve_P]

Well, if the Trader Sheet is used, then I would replace that cap as well, as it probably won't do any harm to do so.

Cheers,

Steve P.

[Joe]

Steve's advise to leave it for a bit is very good as it's all to easy to get into a 'can't see the wood for the trees' situation and then after a break immediately see what's up.

Just to answer your question in post 36: C51 should indeed be a normal one; it's C66 that should be a suppressor (or omitted completely). It's on top of the chassis behind the panel with the voltage selector on.

- Joe