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Main => Monitor/Video Forum => Topic started by: Gamemaster86 on September 13, 2013, 03:36:51 pm

Title: WG K7400 Yoke readings
Post by: Gamemaster86 on September 13, 2013, 03:36:51 pm

Hi would anybody who has a Wells Gardner K7400 chassis and matching tube, be able to check their yoke readings for me?

It;s just I have a suspicion theres something wrong with mine. I'm getting 01.1 on Horizontal and 06.2 on Vertical but i'm having geometry issues so trying to track i down.

Would really help me out.

For reference the Sticker on both the chassis and tube is WG 2036840

Thanks in advance

Title: Re: WG K7400 Yoke readings
Post by: ed12 on September 13, 2013, 03:43:57 pm

Gamemaster86
on the yoke should be a # or give me the exact picture tube # 26" 27" 29"?
so a61-xx-xx-xxxx or a63/a68 or by tybe type
rca/zentih etc and size

ed

Title: Re: WG K7400 Yoke readings
Post by: Gamemaster86 on September 13, 2013, 03:51:27 pm

Sorry is a 25"

Picture below

Title: Re: WG K7400 Yoke readings
Post by: ed12 on September 13, 2013, 04:58:26 pm

my list

25"
phillps a63 horz = 1.2 ohm vert 7.7 ohm
phillips a63 horz = 19.4 ohm vert 7.7 ohm

chk my list
thk-u rickn

ed

Title: Re: WG K7400 Yoke readings
Post by: ed12 on September 13, 2013, 04:59:49 pm

btw yours is a phillips

ed

Title: Re: WG K7400 Yoke readings
Post by: Gamemaster86 on September 13, 2013, 06:04:46 pm

Hmmm my reading are pretty worrying....

Green and Yellow plug (Vertical I think) I got 06.7 and Red and Blue plug (Horizontal I think) I got 01.1

I took the readings by putting the probes into each of the 2 sockets with the power off

Title: Re: WG K7400 Yoke readings
Post by: ed12 on September 13, 2013, 08:39:19 pm

for futher refernce
from right to left on the coloums

Lh=millhenres  Rh=restinace :horz:
Lv=millhenres  Rv=restinace :vert:

ed

p.s it is not a sony tube
but just in case i am wrong ?
then it would be a flat-planer style tube

Title: Re: WG K7400 Yoke readings
Post by: Gamemaster86 on September 14, 2013, 07:48:09 pm

No definitely a Phillips tube and it has curved glass too.

Title: Re: WG K7400 Yoke readings
Post by: ed12 on September 14, 2013, 09:11:07 pm

ok off hand are u measuring ohm's olny ?
if so un-plug the yoke
and do the measure
as my list covers both
:mh: and :res:
now make sure as u were asked  in the other thread chk the caps
as 1 b+ is getting loaded
now with the horz back in shape ?
u want to find the :vert: problem
just so happen's thats the feed line to to vert output ic.
there is a cap in that circuit that will tend to go a bit south and do the exact problem u are having,but without an esr meter u will just have to plug away>as it is said<
and it will be a small cap 1mf/2.2mf/4.7 some where in that range

ed

p.s thk-u i thought it was a philips
use the rca #'s as rca built the tube