Blast City NANAO MS-2930 Shipping Damage, Need Help!

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Blast City NANAO MS-2930 Shipping Damage, Need Help!

Got an MS-2930 Delivered to me today that was damage from shipping...The frame got bent and the neck board got dislocated from the pins and the pins got bent to one side as a result...Nothing was cracked from what i could see.

I went ahead and swap out the Chassis from a working unit...Still no go...I think the Tube is Toast..Shame the Tube is in great condition with light burn in.

The yoke flashes for a second and shuts off.

Can anyone Help...I really would appreciated.
 
Got an MS-2930 Delivered to me today that was damage from shipping...The frame got bent and the neck board got dislocated from the pins and the pins got bent to one side as a result...Nothing was cracked from what i could see.

Did any of the pins break off? Check the very center of the connector on the neck of the tube. There's a very fragile glass tip there where the tube was evacuated. See if it's broken off. Look around the neck of the tube for the "getter" - it should be a silvery shiny grey. If it's flaky and white, then you've lost vacuum.

The yoke flashes for a second and shuts off.

By that, I assume you mean that the neck of the tube lights up briefly? Did it light real bright, or a faint orange glow? If you turn it on again, will it flash again, or nothing? If your tube lost vacuum, then the filament would have lit up bright for a very brief period, then burned out (like a light bulb), never to light again.

-Ian
 
Did any of the pins break off? Check the very center of the connector on the neck of the tube. There's a very fragile glass tip there where the tube was evacuated. See if it's broken off. Look around the neck of the tube for the "getter" - it should be a silvery shiny grey. If it's flaky and white, then you've lost vacuum.



By that, I assume you mean that the neck of the tube lights up briefly? Did it light real bright, or a faint orange glow? If you turn it on again, will it flash again, or nothing? If your tube lost vacuum, then the filament would have lit up bright for a very brief period, then burned out (like a light bulb), never to light again.

-Ian

None of the pins broke off...By Fragile glass tip?...Do you mean the center of the black thing that attaches to the neck tube with numbers on it?...If so its still in tack..Nothing looks crack or damage except for the bent pins and the black thing came off from the epoxy or some kind of glue.

I dont know what you mean by Getter...is it that plastic thing thats inside the glass tube?..The neck of the tube "The one behind the rings" lights up real bright for a second and makes a noise....If i keep on turning it on it does the same thing..

Do you think this tube can be saved?...Or did it loose vacuum and theres nothing i can do?...I really want to get it working again if its doable, the tube is in great condition with little burn in.

Thanks for the help..I really appreciated... Here some pictures.


blastcity010.jpg


blastcity021.jpg


blastcity034.jpg


blastcity045.jpg


blastcity049.jpg
 
OK, it's hard to tell from looking at the pictures, but it definitely looks like the tube may have been damaged. Right at the connector, hidden under the black plastic guide key is a little glass tip. It's right in the center of the circle of pins, and it's where the tube was sealed off after evacuating it. Look at it very closely for any kind of crack or damage.

The arcing inside the tube you're getting does seem like the tube has lost it's vacuum. The filament probably already burned out, and you're just getting an arc from the focus anode or something - especially since you're hearing something when it makes that flash.

When talking about tubes (picture tubes and just regular tubes) the getter is a silvery colored patch on the glass. It's some kind of metal alloy that reacts with the air. The way tubes are made, is the components are assembled and fitted into the envelope, then the tube is pumped down to remove all the air, and sealed. The getter material inside the tube reacts with any remaining molecules of air to prevent them from contaminating the vacuum. But once the vacuum is broken, and the tube fills with air, this getter material reacts with all that air, and turns white and flaky looking, instead of silver.

In regular tubes, the getter is very obvious - it's usually right at the top of the glass. On picture tubes, it's in the neck, around the gun assembly. You may or may not even be able to see it, since the convergence assembly may be hiding it.

Here's another thing we can try. What's the tube's number? I've never seen one of those Nanao monitors, so I don't know what tube it is, but if I know the tube number, I can look up the base pinout, and figure out which pins are the filament. Then, you can measure those pins with your meter to check for resistance. If it reads open, then the filament has burned out - thus meaning that the tube has no vacuum and it's trash. If the filament checks good, then the tube probably still has vacuum.

-Ian
 
when you say "tube number" do you mean the part number on the label?.. If so its
200-55034-24...I dont see any other number apart from the serial number...

Also how would i go about testing for resistance on the pins?...Sorry this is all new to me.
Your help is very much appreciated...Thanks.
 
What side of town are you in? Someone local might be able to swing by and take a look at the tube. If the vacuum has been lost it's best to pull the yoke and chassis and toss the tube.
 
What side of town are you in? Someone local might be able to swing by and take a look at the tube. If the vacuum has been lost it's best to pull the yoke and chassis and toss the tube.

Im gonna take your advice and toss the tube....As i dont have that much knowledge on monitors to continue testing... Just making sure...Is the yoke the glass looking tube with rings on it with the pins sticking out like in the pictures?...would i just need to undo the 2 clamp screws to remove it?.
 
The yoke is the coils of copper wire on the neck of the tube. The glass of the tube is all one piece (or, rather, it's supposed to be).

I assume that you've already tried to file a claim with the shipper? I mean, if it was working before it shipped, and then was broken in shipping, the insurance should pay for your costs.

-Ian
 
The yoke is the coils of copper wire on the neck of the tube. The glass of the tube is all one piece (or, rather, it's supposed to be).

I assume that you've already tried to file a claim with the shipper? I mean, if it was working before it shipped, and then was broken in shipping, the insurance should pay for your costs.

-Ian

Its in process...The guy that i bought it from is handling the claim.
 
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