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#1
09-04-2007, 05:13 PM
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eico st-70 amp
Hello got a Eico ST-70 for free its dirty andhas never ben worked on.. Where can i find data on the web for it.. Can you wash them and dry them in the sun
to clean dust/dirt off. Anybody have on is it worth restoring? Were they kits? Do they sound good , it wieghts a ton for its size has some rust and scratches can not find anything burned up ..Got a Dyna-PAS for free too missing a knob and a H H Scott LT-10 for free too! Where can i find info on them as well? Thanks for the replys Angelo 
Last edited by sprman55; 09-04-2007 at 05:18 PM. Reason: left out stuff! 
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#2
09-05-2007, 01:21 PM
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Hi Angelo, I typed in Eico st-70 schematics into Google and got this link http://www.triodeel.com/schindex.htm there is a crappy picture there, but there was a link to the unofficial Eico website, which might have more stuff. Just try Googling the name, model and schematics in Google Images and you will find something. As far as cleaning i would not soak transformers in any water based solution. Maybe someone else has good way remove dirt from chassis. Oh i think you might get more responses in the Audio section of the forum, Maybe under the DIY section, Logan
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#3
09-05-2007, 02:31 PM
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The EICO user group on Yahoo has the files and a bunch of good posts from Eico nuts.
"Can you wash them and dry them in the sun to clean dust/dirt off" hmmmm... never thought about it - never tried it - I generally start with a paint brush some compressed air and go from there. Most were kits, some were factory wired - they generally had an EICO QC stamp on the chassis if they were factory wired. The general wisdom is not to fire it up without a variac and a check up. The unofficial Eico site is off the air but I have all the files if you need something that's not on the Yahoo groups files.
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#4
09-05-2007, 03:22 PM
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Hello found some info but you cant read it well plus need voltage/resistance charts for tubes fired it up and 1 output tube glows red bad cap so have ordered them ! Thanks used paint brush on it and wet rag still dirty but better .Dont know how to send photos lol ! Maybe i will send of for info its a kit build..The H H Scott replaced 6X4 and it worked, yes did post in audio section.. Hope to get it runing soon see ya Angelo ;smoke;
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#5
09-05-2007, 03:33 PM
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Lots of good tubes in those old Eicos, so even if it's dead the tubes are a find alone. I've got a couple ST-40s here I'm going to rehab, one of these days
__________________
I think the world is run by "C" students - Al McGuire
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#6
09-16-2007, 07:43 PM
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Eico
I use a ST-70 for my main amp. If you get it up and running, you ll love it with the right speakers. At 35 w/pc you need something fairly efficient.
These are great sounding amps. good luck.
__________________
Have worked for about 40 years testing, marketing and manufacturing almost all types of electrical insulation materials. Epoxys, nomex, magnet wire enamels, mica tapes, almost any type of dielectric material out there.
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#7
09-16-2007, 08:10 PM
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Quote:
__________________
Ed
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#8
09-23-2007, 09:37 AM
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Hello I cleaned up the amp some with a wet rag, paint brush and elbow grease.It looks much better.. Have to check all tubes and see what they read.. I be careful cleaning it may try detoxic on it.. Dont have time to do much with it due to working so much but should get to it very soon thanks for all the kind info.MR. Fixit see you at the swap meet oct 13th! Angelo
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#9
09-23-2007, 10:33 AM
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Quote:
__________________
 Sansui Receiver Seven, Sony XA3ES, Klipsch KLF20's. .
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Linear Mode
