Electronic equipment repair and service manual search discussion :: Topic review

svr · Posted: Wed Apr 04, 2007 2:08 pm Post subject:

hello fistral
please geave me black diamond bd2851 ftb (or) fbt no------

svr · Posted: Wed Apr 04, 2007 1:58 pm Post subject:

replaced horizantal out put transistor-------new one use bu508af

Guest · Posted: Tue Jan 30, 2007 1:56 pm Post subject: Re: 11AK19 PRO

fistral · Posted: Sat Apr 01, 2006 7:01 pm Post subject: Thanks

Thanks very much for replying Very Happy

. One thing I'm not sure of is how do you tell if the tube is 110 or 90 degree? It is 28". Question

keithw · Posted: Thu Mar 30, 2006 10:10 pm Post subject:

Forgot to say R629 should be 2.7ohm for 90 degree crt, 27 ohm for 110 degree crt,

keithw · Posted: Thu Mar 30, 2006 9:25 pm Post subject:

Usual causes are

Q603, I'll check equivalents tomorrow at work
C630
L604
Dry joints on C613, L602, remove and clean legs
EEPROM
IC401

Hope this helps

Keith

fistral · Posted: Thu Mar 30, 2006 5:37 pm Post subject:

Come on guys 56 views and no replys! Sad

Somebody must have an opinion - please Rolling Eyes

fistral · Posted: Sat Mar 18, 2006 11:05 pm Post subject: 11AK19 PRO

Hi
I have a Black Diamond BD2851s (Vestel 11AK19 Pro I think) 4:3 28" Tube
The original fault was intermittent narrow picture with sides bowed in caused by a dry joint at C630. After resoldering however the picture was too wide.
So I bought and fitted the Phoenix Modkit 52 E-W repair kit. The repair kit contained several values different to the originals but then it is supposed to be an upgrade.
R629 replacement was value 2R7 1/4W which I believe is correct for a 28" 4:3 screen.
Instead of Q603 original PHF9NQ20T or as the Drawing BUK444-200 the supplied transistor was an IRF630 which doesnt have an isolated case. Fortunately I noticed and fitted an insulator but I wasn't very pleased.

Fitting all this didn't make any difference, the picture is still too wide. I have tried the set up menu but the E-W and width adjustments have no effect. I'm thinking of changing Q603 for an IRF40f which seems to be a better substitute but don't think it will make a difference.
I'm worried that the E-W O/P of IC401 TDA884x Video processor could be damaged.

Any advice would be greatly appreciated.