Our Valued Sponsor
OpinionsConsumer ReviewsGuides and How TosCoffeeGeek ReviewsResourcesForums
Espresso: Espresso Machines
NS Oscar Gicar Issues
Stefano's Espresso Care
Repair - Parts - Sales
Factory Authorized &
Trained Technician
Not Logged in: Log In to Postlog in
New Topics updated topics   New Posts new posts   Unanswered Posts new unanswered  
Search Discussion Board search   Discussion Board FAQ faq   Signup sign up  
Discussions > Espresso > Machines > NS Oscar Gicar...  
view previous topic | view next topic | view all topics
Author Messages
Senior Member

Joined: 15 Apr 2014
Posts: 3
Location: australia
Expertise: I love coffee

Posted Fri Apr 18, 2014, 10:41pm
Subject: NS Oscar Gicar Issues

Just a few things for a struggling wannabe
On turning my Oscar on, the element light turns on for about 2 seconds, there is a electrical hum from the Gicar and the water indicator and element light start flashing.
I think the water light flashes on, Gicar then turns the element off. The water light flashes off, the Gicar turns the element on.
I have changed Relay 3 and the transformer on the Gicar box. These two original parts had burn marks on them.
The side where there are 7 wires is the AC side right?
I checked the capacitor on this side and i get a reading of .5V AC. Is this too high?
I checked the ribbon and i get about .5v DC. Is that right?
This is with the machine power button off but the wall plug on. Yes, I know, I'm playing with a hot box.
I changed relay 3.
This did not fix the problem. I get a flashing water fill light. When the water light flashes on, the boiler goes off, and vice versa.
After leaving it to flash for about 30 seconds, the new relay 3 burnt out because the led in the relay stopped flashing and the boiler light did not alternate on and off with the water fill light anymore.
I changed the relay and the transformer. I still get the flashing on and off light from the water fill and boiler lights.
The capacitor does not seem swollen. There are no other burn marks on the board. I have not touched relay 1&2 as I figured relay 3 would not work at all if there was a fault with 1&2. This could be wrong.

Here is a video of what is happening.
Do you have any suggestions?
Thanks for your time,
back to top
 View Profile Link to this post
Joined: 25 Nov 2007
Posts: 8,215
Location: Riverside, Ca, U.S.A.
Expertise: I live coffee

Espresso: ECM Vene. A1, La Cimbali M32
Grinder: Azkoyen Capriccio, Major
Vac Pot: 40s era Silex
Drip: Msl. Com. brewers
Roaster: gave it a try, decided no
Posted Mon Apr 21, 2014, 6:10am
Subject: Re: NS Oscar Gicar Issues

I have never "rebuilt" the brains of the machine but I would start with the water tank /  out of water circuit, is there a loose wire, bad connection etc?
Start at the easy and normal stuff first, it is normal because it happens all the time then move on to the things that happen less often.

Just a thought, welcome to the board :D

In real life, my name is
Wayne P.
Anything I post is personal opinion and is only worth as much as anyone else's personal opinion. YMMV!

Feed the newbs, starve the trolls and above all enjoy what you drink!
back to top
 View Profile Visit website Link to this post
Senior Member
Joined: 24 Nov 2012
Posts: 518
Location: Canada
Expertise: Professional

Espresso: Giga 5, ECM Giotto, Rocket...
Grinder: Anfim Milano-Best
Vac Pot: No  :(
Drip: Some $30 thing from Walmart
Roaster: I buy pre-roasted.
Posted Tue Apr 22, 2014, 4:07am
Subject: Re: NS Oscar Gicar Issues

Something is shorting out but not all the time.  It works fine until it tries "Something".  My first assumption is that this "Something" is that it is trying to fill the boiler.  We know the short isn't at the pump, because it runs without issue when you press the button.

Try pulling both circuit wires off of the boiler-fill solenoid's coil. it doesn't matter if you leave the ground or not, it's allowed to be shorted to ground.  Situate the ends of the pulled wired somewhere where they can't touch anything, maybe a bit of tape over the tips if there's any chance of touching anything.   And turn it on again...
It obviously won't succeed in the boiler-fill attemt, but if this stops it from shutting off and on in jitters, then you know that coil of the boiler-fill solenoid is burnt/shorted.
If this makes no difference, then we have to move on to suspecting the next possible component.
back to top
 View Profile Link to this post
view previous topic | view next topic | view all topics
Discussions > Espresso > Machines > NS Oscar Gicar...  
New Topics updated topics   New Posts new posts   Unanswered Posts new unanswered     Search Discussion Board search   Discussion Board FAQ faq   Signup sign up  
Not Logged in: Log In to Postlog in
Discussions Quick Jump:
Symbols: New Posts= New Posts since your last visit      No New Posts= No New Posts since last visit     Go to most recent post= Newest post
Forum Rules:
No profanity, illegal acts or personal attacks will be tolerated in these discussion boards.
No commercial posting of any nature will be tolerated; only private sales by private individuals, in the "Buy and Sell" forum.
No SEO style postings will be tolerated. SEO related posts will result in immediate ban from CoffeeGeek.
No cross posting allowed - do not post your topic to more than one forum, nor repost a topic to the same forum.
Who Can Read The Forum? Anyone can read posts in these discussion boards.
Who Can Post New Topics? Any registered CoffeeGeek member can post new topics.
Who Can Post Replies? Any registered CoffeeGeek member can post replies.
Can Photos be posted? Anyone can post photos in their new topics or replies.
Who can change or delete posts? Any CoffeeGeek member can edit their own posts. Only moderators can delete posts.
Probationary Period: If you are a new signup for CoffeeGeek, you cannot promote, endorse, criticise or otherwise post an unsolicited endorsement for any company, product or service in your first five postings.
Great Espresso at Home
Curated selection of the best machines from La Spaziale, Izzo, Quick Mill, La Marzocco & more.
Home | Opinions | Consumer Reviews | Guides & How Tos | CoffeeGeek Reviews | Resources | Forums | Contact Us
CoffeeGeek.com, CoffeeGeek, and Coffee Geek, along with all associated content & images are copyright ©2000-2015 by Mark Prince, all rights reserved, unless otherwise indicated. Content, code, and images may not be reused without permission. Usage of this website signifies agreement with our Terms and Conditions. (0.335941076279)
Privacy Policy | Copyright Info | Terms and Conditions | CoffeeGeek Advertisers | RSS | Find us on Google+