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Main => Monitor/Video Forum => Topic started by: cack01 on September 08, 2006, 12:29:02 am

Title: WG K7000
Post by: cack01 on September 08, 2006, 12:29:02 am

(http://i70.photobucket.com/albums/i115/cack01/PICT0013.jpg)

http://s70.photobucket.com/albums/i115/cack01/?action=view&current=PICT0014.flv

Okay, lets see how good you guys are.  The monitor is a WG K7*** series made 1986  :o .  Anyways, when it is turned on, I get a high pitched squeel from the neck area of the tube.  I am having a had time pin pointing exactly where on the neck.  The first image shows what is on screen.  Basically a horizonal orange/red line.  The link should take you to a really quick video of the squeeling and the messed up picture.  I have performed a capkit on this monitor, and the squeel still persited and no change in picture was noticed. 

Any help would be great guys.  I can get you the exact model number if you need it, I just can't remember it off the top of my head.

Title: Re: WG K7000
Post by: Ken Layton on September 08, 2006, 02:04:08 am

Cap c51 is not included in the capkits has been failing alot lately.

Vertical deflection IC sometimes goes bad.

Yoke could be internally arcing.

Title: Re: WG K7000
Post by: cack01 on September 08, 2006, 01:55:04 pm

Okay,  Tantalum C51 I can fix.  But how would I go about diagnosing the IC and the Yoke.  I'm guessing I check the voltage out of the IC, but I do not know which pin.

Title: Re: WG K7000
Post by: Ken Layton on September 08, 2006, 06:46:32 pm

The manual gives the voltages on all the IC's, transistors, and diodes.

Title: Re: WG K7000
Post by: Kevin Mullins on September 09, 2006, 12:46:38 am

The last K7000 that I had making that kind of noise from the neck area turned out to have a bad tube. Cracked around one of the pins..... also gave off a nice blue light show inside the neck.