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Main => Monitor/Video Forum => Topic started by: arcade nut on March 02, 2013, 12:14:25 pm

Title: Kortek KT-2938F
Post by: arcade nut on March 02, 2013, 12:14:25 pm
Tried 2 find the schematic to a Kortek KT-2938F  but to no avail  :banghead: have to much red and was going to pull trans. but it aint got none  ;D or to many,(6 small ones) I think I can pull res 822 on the neck board and it will do the same thing,, it is going red when it warms up and I want to make sure it isn`t the tube.
thanks in advance, Robert
Title: Re: Kortek KT-2938F
Post by: ed12 on March 02, 2013, 01:00:42 pm
lm2405 is your gun drive chip
it is on a heat sink
looking from the top down with board off of neck it will be on your right
the small tranistor's are pre drive's

going red after warming up ?
go to menu/advanced reset color tone's
if that dose not do the trick menu/advanced and adjust
if it still lean's red have the crt chked

ed
Title: Re: Kortek KT-2938F
Post by: arcade nut on March 02, 2013, 02:33:55 pm
lm2405 is your gun drive chip
it is on a heat sink
looking from the top down with board off of neck it will be on your right
the small tranistor's are pre drive's

going red after warming up ?
go to menu/advanced reset color tone's
if that dose not do the trick menu/advanced and adjust
if it still lean's red have the crt chked

ed
Thanks so much, even sprayed everything I could think of with freon and didn`t help, and I was very scared cause u know what happend when u spray hot glass with freon?? :laugh2: :hissy: :lol ,, acually it seems like purple after it is warmed,,, it looks good when you first turn it on
Title: Re: Kortek KT-2938F
Post by: arcade nut on March 02, 2013, 04:57:21 pm
Just changed the neck board with a known good one and still goes purple after warming up :banghead: OSD looks good tho, tried to recall and no good, what on the chassis can cause that???I have another that I have to do a cap kit on and going to plug that one in tomorrow, I will keep you posted
Title: Re: Kortek KT-2938F
Post by: arcade nut on March 02, 2013, 05:19:20 pm
sorry guys, it was my CGA to VGA card, switched the cards and tada, :applaud:,, still would like a schematic
Title: Re: Kortek KT-2938F
Post by: ed12 on March 02, 2013, 09:06:12 pm
i think u have to look for it under 27 not 29
same chassic dif yoke
is about it

ed
Title: Re: Kortek KT-2938F
Post by: arcade nut on March 03, 2013, 11:45:59 am
kt-2182 that one was very close, atleast the neck board values anyway
Thanks guys  ;)