[TechAssist] Re: Hitachi 46" PTV
- From: "tvservice" <tvservice@xxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Wed, 25 Jan 2006 13:33:14 -0600
the focus block has been an issue on these sets
also clean or replace all 6 spark gaps 2 on each of the crt boards
then realign gray scale
be sure customer settings are in normal/standard
Robert
tvservice@xxxxxxxxxxxxx
H & H Electronics Inc
http://supertek.igniteinc.biz
----- Original Message -----
From: "peggs" <peggs@xxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Wednesday, January 25, 2006 2:22 PM
Subject: [TechAssist] Hitachi 46" PTV
> could someone forward this to Alvie Rodgers for me.......
> model 46F510
> HD Monitor
> Oct. 2004
>
> Dark and Out Of Focus Picture.
> Slight increase of the G2 controls(all) has given a Bright and
> Balanced(Gray Scale) Picture....... and actually Increasing the Focus
> Controls(all) has brought the Picture in focus as well,problem is the
Focus
> Controls are now wide open(turned all the way up).Picture looks good
> now,but how's it going to look in 6 months ???
> The Focus Voltage coming from the Fly is 10Kv.
> Focus Voltage coming out of the Focus Block(going TO the picture tubes) is
> app. 7Kv(controls wide open). Should it be 10Kv with the controls wide
open
> ???
> If so,I may have a bad Focus Block.
> If not,my fear is I have 3 Bad Picture tubes...... how do I check them ???
> I guess it's possible I may have 3 Bad CRT Sockets......
> Could Low HV cause this ???....... Focus Voltage coming from Fly seems
> plenty High enough..... HOT B+ is 115v(I believe... found it coming from
PS
> PCB)
>
> Tritronics does not have a part number for the HV Block......... any help
> out there ???
> The (3) Picture Tubes are all around $172(my cost) from Tritronics.....
> which sounds dirt cheap.... could that be because Hitachi is having a
> problem with these tubes ???
>
> I'm headed to the Hitachi site.... if it's up.
>
> Peggs
> Peggs' Electronics
> 1519 West 2nd Street
> Owensboro,KY 42301
> 270-926-4968
> fax 270-686-7399
> peggs@xxxxxxxxxxxxx
>
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