[TechAssist] Re: TA Mitsubishi VS4543 jagged lines...was. Green focus
- From: "LeRoy Westlund" <llw@xxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Tue, 1 Jun 2004 00:19:04 -0600
Jeff,
If it was me ( and I'm glad it's not ),....I'd pull the light box, and work
with the vertical line symptom on the bench in the shop. Project the picture
onto the ceiling. If you can't see the cross hatch very good on the ceiling,
just look down into one of the CRTs directly (for very short periods of time
only). Don't try to fix all the problems for this set in the home. In the
shop, you can take your time, and won't have to deal with the customer
breathing down your neck.
To pull the light box, you have to first remove the front screen
assy.,...then on each side there is a wooden plate that has wood screws in
it. Remove the plates first, and then you will have acess, and be able to
reach down under them, and remove the 4 screws that are holding the Lightbox
in place. Don't forget to take the remote control with you to the shop.
Leave the control panel in the home. It's really easier to pull this
lightbox then one might think. It's a little flimsy to carry, but, it will
hold together satisfactory, if you are careful.
When you get it in the shop, look for more contamination from fluid leakage
on the deflection board. Maybe under pug in connectors for yokes, and
convergence plug- ins. Also check some more e-caps on related ckt. boards.
Once you get the vertical line symptom cleared up, take it back to the home,
and work with the convergence to finish the job.
Good luck,
LLW
LeRoy Westlund
Westlund TV & Electronics
97 North Main "Where there's a will,...
Centerfield, UT 84622-0087 There's always a way."
Ph./Fax 435-528-3822
mailto:LLW@xxxxxxxxxx
-----Original Message-----
From: Intrepid Video Support <support@xxxxxxxxxxxxxxxxxx>
To: Techassist <techassist@xxxxxxxxxxxxx>
Date: Monday, May 31, 2004 9:01 PM
Subject: [TechAssist] Re: TA Mitsubishi VS4543 jagged lines...was. Green
focus
>Update on this one...I hope someone can help me finish this repair..
>I fixed the focus but rotating the lens on the green CRT.
>I applied HV putty to the cups of the rebuilt CRT's. Now, I can't hear the
hiss for the HV, but when
>displaying a cross hatch, the vertical lines are jagged looking(all three
CRT's), the horizontal lines are
>fine and steady..
>Could this still be a HV reg problem, or something else on the board.. A
small amount of fluid did leak
>on the board and it wasn't too hard to clean the little bit of fluid up...
>Perhaps this is a setting in the menu for H-freq...? I know how to get into
the service menu, but no print
>for this unit.
>Thank you.
>Jeff
>--
>Intrepid Video TV/VCR Repair
>263 S Front St, Steelton PA 17113
>717-939-7708; (F) 717-564-4952
>www.intrepid-video.com www.tech-repair.net
>----- Original Message -----
>From: "Intrepid Video Support" <support@xxxxxxxxxxxxxxxxxx>
>To: "Techassist" <techassist@xxxxxxxxxxxxx>
>Sent: Tuesday, May 25, 2004 12:06 PM
>Subject: [TechAssist] TA Mitsubishi VS4543 Green focus
>
>
>Hello...
>I just replaced two CRT's on this unit from PatX. Now, I can't get the
green to focus and very so often, I
>hear a POP, CRT's go out and come back on a split second later.
>Could this be the result of a defective green CRT?
>Also, I think I will nee the manual for this. I went into the service menu
and it appears accidentally
>reset the EEPROM and I loss channel three reception(couldn't see my cross
hatch from the generator any
>more) and all convergence lines went bowed.
>I rarely see Mitsubishi's, so I'm not sure where to go from here...since
it's just me, I can not bring the
>set in.
>Any assistance appreciated..
>Thank you.
>
>Jeff
>--
>
>
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