Eico HF-32

crick · 24th June 2007, 01:50 PM

Anyone have a schematic for sale or trade?I've got two badly cooked resistors between pins 6 and 2 that I can't identify.
Thanks in advance!
Doug

crick · 24th June 2007, 08:54 PM

Forgot to mention these resistors are on two of the EL84 sockets.

SY · 24th June 2007, 09:08 PM

Those are probably grid-stoppers. 2k2 is a safe value, but you need to investigate what cooked them in the first place (a shorted coupling cap and/or output tube would be my first guesses).

crick · 25th June 2007, 02:18 AM

Thanks for the reply.The old ones appeared to be 10 ohms but to burned to know for sure.The other two on the remaining EL84's are 1000.Maybe that's what they are.I agree that an output tube could be the cause and that's a shame because the one tube that is dead is a Bugleboy.I should have known better than to take the sellers word that the amp worked fine.Shame on me.I guess the tube could have been on it's way out anyway.

Thanks!Doug

24th June 2007, 01:50 PM	#1
crick diyAudio Member Join Date: Jun 2007	Eico HF-32 Anyone have a schematic for sale or trade?I've got two badly cooked resistors between pins 6 and 2 that I can't identify. Thanks in advance! Doug

24th June 2007, 09:08 PM	#3
SY diyAudio Moderator Join Date: Oct 2002 Location: Austin, TX Blog Entries: 1	Those are probably grid-stoppers. 2k2 is a safe value, but you need to investigate what cooked them in the first place (a shorted coupling cap and/or output tube would be my first guesses). __________________ "...we stumble and get up, we are sad, confident, insecure, feel loneliness and joy and love. There is nothing more; but I want nothing more.” - Christopher Hitchens 1949-2011

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24th June 2007, 08:54 PM	#2
crick diyAudio Member Join Date: Jun 2007	Forgot to mention these resistors are on two of the EL84 sockets.

25th June 2007, 02:18 AM	#4
crick diyAudio Member Join Date: Jun 2007	Thanks for the reply.The old ones appeared to be 10 ohms but to burned to know for sure.The other two on the remaining EL84's are 1000.Maybe that's what they are.I agree that an output tube could be the cause and that's a shame because the one tube that is dead is a Bugleboy.I should have known better than to take the sellers word that the amp worked fine.Shame on me.I guess the tube could have been on it's way out anyway. Thanks!Doug

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