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Topic: Repairing a Sankyo Stereo 800 - The Journey
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John Selph
Junior
Posts: 28
From: Metairie, LA, USA
Registered: Nov 2012
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posted August 14, 2013 05:37 PM
Janice, I repair a lot of computers and to expound on identifing bad caps you need to look for swollen and leaking caps. If you see any bulging of the capacitor body, or any black or brown "crud" on the component, then it is probably bad. Ironically, I see this on motherboards quite a bit, and the computer still works, but will usually fail within a short period of time. Also, be sure to disconned the AC and discharge any caps that you will be working on, or around. They do "bite"! John
-------------------- Outside of a dog, a book is a man's best friend. Inside of a dog, it's too dark to read. - Groucho Marx -
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Mathew James
Jedi Master Film Handler
Posts: 740
From: Hamilton, Ontario, Canada
Registered: Dec 2014
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posted December 14, 2014 08:58 AM
Hi All, Read the thread from start to finish. Thrilling!!! Sorry Janice how much trouble this has been.
If the original ebay advert said it powered on, yet the lights and spindles didn't work...I would, like you, think it was an easy fix. I've bought 2 machines from ebay, both from 100% feedbackers(that is my new rule unless i personally look at their negatives and see that some people are just mean and leave negs for nothing than i will still consider them 100%). I have been fortunate because: a) The machines were not this problematic b) This forum help immensely
All i see now is that all you have purchased was an education, an education of how a sankyo 800 looks inside
I really hope you don't give up, even though it has taken this long, but will understand if you throw in the towel on this one... Did you get the new transformer?? Cheers, Matt ps: I agree some ebayers really are clueless with what they sell. Case in point...my new st1200HDM came in a box filled with those annoying pink foam packaging pieces.....just a box with a projector inside filled with those pieces. took me an hour to blow out the machine with compressed air!!!!!Ridiculous
-------------------- -- Cheers, Matt 📽
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Mathew James
Jedi Master Film Handler
Posts: 740
From: Hamilton, Ontario, Canada
Registered: Dec 2014
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posted December 14, 2014 10:37 AM
I'm like you..just dabble here and there with a multimeter, but really don't know enough about it to be totally confident.
I think what you need going forward, before turning on any more power etc...is, once the pcb is fixed and then replace the bridge rectifier, find out from the gurus here what order you can safely turn things back on, so as not to re-fry anything. The last thing you want is to blow that new transformer(if that is possible). I am more worried about your safety of course! So far you are doing good. The fact that Pete even blew a fuse, and he knows what he is doing, shows how easy it is to mess up.... Such a scarey project, but i agree- FUN!! I will watch in anticipation as well...with popcorn in hand... Here in Canada, Radio Shack is now 'The Source' which i nowhere as good as radioshack used to be here, but they used to carry rectifiers and such. I am sure someone here will have an extra one that will work for you! Cheers, Matt
-------------------- -- Cheers, Matt 📽
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