Cross reference for H.O.T 2SC5777

sideshowbob

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Hi from New Zealand,

Hoping someone can help.

I purchased a Wei Ya 825HR4 chassis from Victor (8liners), only to have to fail within 30 seconds of powering up.

Too expensive to send it back to the States.

I powered it up with a 1940 in 1 PCB. Vert hold was out....I adjusted it all the way down to the end of the "pots" travel , and it went "POP", and now the chassis is dead.

It's been sugessted by a few people that the HOT is stuffed. I measure it on diode mode and every reading was 0.0001.

Can someone please offer a cross refernce for the H.O.T 2SC5777 that I can use, as I couldn't find one on EBay.

Do you think anythink else would have blown?

Thanks in advance
 
First I'd check all the pots you were messing with and put them back to where they were. If you stressed the horizontal oscillator, that could blow your HOT.

As for your replacement, you could probably get away with using a C3688 - or 2SC3688 - which is used on some WG chassis. The specs are almost exactly the same, and it should be easier to get ahold of at least the NTE equivailent - NTE2354. BobRoberts has them for $8 apiece, and I know a local NTE supplier usually has them.

The BASE voltage max is a little higher on the 2SC5777, and I think the original has an internal damper diode that the replacement may not, so I can't guarantee this will work perfectly, but it's a cheap alternative that MIGHT work, and that's better than nothing.

I'd have just had Victor replace the chassis. His supplier is overseas - probably Hong Kong or Korea - and it would probably be a lot cheaper and faster to ship it there and receive the new from there rather than go all the way back to the states...
 
Thanks for that info, I'll give it a go.

Yes, I think you are right, it does have an internal damper.

Not worth the cost to ship back.

Worth trying to fix it before I trash it.

Thanks again
 
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