TV starting to show triple
 

I have a Sylvania Superset model # RPK708 CH03, chasis # 27P1-02. I'm
starting lose focus and see 3 seperate colors (blue, red, and yellow). Is
there a minor adjustment I can make or a part I can replace to fix this.
I'm not exactly sure where to start. Recommendations would be
appreciated.

Thanks!

kovicky:
The part you will want to replace is:
Sylvania Superset model #RPK708
Dan
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"kovicky" kovicky@[unlisted] wrote in message
lkaboutelectronicequipment.com...
I have a Sylvania Superset model # RPK708 CH03, chasis # 27P1-02. I'm
starting lose focus and see 3 seperate colors (blue, red, and yellow). Is
there a minor adjustment I can make or a part I can replace to fix this.
I'm not exactly sure where to start. Recommendations would be
appreciated.

Thanks!

"kovicky" kovicky@[unlisted] wrote in message
lkaboutelectronicequipment.com...
I have a Sylvania Superset model # RPK708 CH03, chasis # 27P1-02. I'm
starting lose focus and see 3 seperate colors (blue, red, and yellow). Is
there a minor adjustment I can make or a part I can replace to fix this.
I'm not exactly sure where to start. Recommendations would be
appreciated.

It's never an adjustment beyond the obvious customer controls on the front.
I'm not familiar with the model but I have to assume this is a projection
TV? If so then there's probably a fault on the convergence board.

This is not a projection tv. The part # that was recommended (RPK708) is
not a legitimate part #. Is there any description you can give for the
part that needs to be replaced?

Thanks!

Dan

On Tue, 28 Dec 2004 15:23:40 -0500, "kovicky" kovicky@[unlisted]
wrote:

This is not a projection tv. The part # that was recommended (RPK708) is
not a legitimate part #. Is there any description you can give for the
part that needs to be replaced?

Thanks!

Dan

The idea is that that is the part # for the set itself...I am not
familiar with the model, but apparently at least one person here deems
it to be not worthwhile repairing in at least some circumstances.

Tom

Sounds as if either the tube is getting soft or somehow the convergence
rings have been misaligned. BTW what is the manufactureing date on the set?
"Tom MacIntyre" wrote in message
...
On Tue, 28 Dec 2004 15:23:40 -0500, "kovicky" kovicky@[unlisted]
wrote:

This is not a projection tv. The part # that was recommended (RPK708) is
not a legitimate part #. Is there any description you can give for the
part that needs to be replaced?

Thanks!

Dan

The idea is that that is the part # for the set itself...I am not
familiar with the model, but apparently at least one person here deems
it to be not worthwhile repairing in at least some circumstances.

Tom

In article
outelectronicequipment
..com, kovicky@[unlisted] says...
I have a Sylvania Superset model # RPK708 CH03, chasis # 27P1-02. I'm
starting lose focus and see 3 seperate colors (blue, red, and yellow). Is
there a minor adjustment I can make or a part I can replace to fix this.
I'm not exactly sure where to start. Recommendations would be
appreciated.

Sounds like the CRT is getting soft and the yoke is sagging.
Likely will be hard to justify cost of repair.

This is probably terminal as a few people have mentioned.
However, on the Line Output Transformer (the one with the
big EHT cable which goes to the top of the tube), there are
usually two controls. One labelled Focus, the other SCREEN.
Leave SCREEN alone, but you may like to try adjusting Focus,
while displaying a test card. Sometimes poor focus can also
upset the convergence, hence the three colours you are seeing,
but adjust for sharpest focus. On large screen sets, there
may even be two focus controls, one for the centre of the
picture and one for the edges.

It's unlikely to have enough to rectify your problem, but
it's just about the only thing you can try without more
knowledge of TV repairs.

Use a well insulated screwdriver and keep your hands out
of the set while making the adjustment.

Colin


kovicky wrote:

I have a Sylvania Superset model # RPK708 CH03, chasis # 27P1-02. I'm
starting lose focus and see 3 seperate colors (blue, red, and yellow). Is
there a minor adjustment I can make or a part I can replace to fix this.
I'm not exactly sure where to start. Recommendations would be
appreciated.

Thanks!

On Tue, 28 Dec 2004 10:45:59 -0500, "kovicky" kovicky@[unlisted]
wrote:

I have a Sylvania Superset model # RPK708 CH03, chasis # 27P1-02. I'm
starting lose focus and see 3 seperate colors (blue, red, and yellow). Is
there a minor adjustment I can make or a part I can replace to fix this.
I'm not exactly sure where to start. Recommendations would be
appreciated.

Thanks!

Just googled this...it's a NAP Sylvania, meaning it's fairly old, I
think. I can't understand that the convergence rings may have moved by
themselves, because it's difficult enough to get them separated when
you want to, but... ?

Tom

On Fri, 31 Dec 2004 21:30:46 GMT, Tom MacIntyre
wrote:

On Tue, 28 Dec 2004 10:45:59 -0500, "kovicky" kovicky@[unlisted]
wrote:

I have a Sylvania Superset model # RPK708 CH03, chasis # 27P1-02. I'm
starting lose focus and see 3 seperate colors (blue, red, and yellow). Is
there a minor adjustment I can make or a part I can replace to fix this.
I'm not exactly sure where to start. Recommendations would be
appreciated.

Thanks!

Just googled this...it's a NAP Sylvania, meaning it's fairly old, I
think. I can't understand that the convergence rings may have moved by
themselves, because it's difficult enough to get them separated when
you want to, but... ?

Tom

Hmmm...based on my memory being jogged by another post here, maybe
some bell convergence magnets have fallen off, due to their respective
attachments getting old?

Tom

On Tue, 28 Dec 2004 10:45:59 -0500, "kovicky" kovicky@[unlisted]
wrote:

I have a Sylvania Superset model # RPK708 CH03, chasis # 27P1-02. I'm
starting lose focus and see 3 seperate colors (blue, red, and yellow). Is
there a minor adjustment I can make or a part I can replace to fix this.
I'm not exactly sure where to start. Recommendations would be
appreciated.

Thanks!


The yokes fail on these sets which cause this problem. We could never
figure out what changed.The yoke still rings ok and there were no
external cosmetic changes. Chuck

"Chuck" wrote in message
...
| On Tue, 28 Dec 2004 10:45:59 -0500, "kovicky" kovicky@[unlisted]
| wrote:
|
| I have a Sylvania Superset model # RPK708 CH03, chasis # 27P1-02. I'm
| starting lose focus and see 3 seperate colors (blue, red, and yellow).
Is
| there a minor adjustment I can make or a part I can replace to fix this.
| I'm not exactly sure where to start. Recommendations would be
| appreciated.
|
| Thanks!
|
|
| The yokes fail on these sets which cause this problem. We could never
| figure out what changed. The yoke still rings ok and there were no
| external cosmetic changes. Chuck

Do they use permanent magnets as adjusters on the yoke? Could they be losing
magnetism?

N

As a former Philips factory tech, I saw many of these sets with yoke problems;
most likely one of the trimmer magnets in the yoke assy has come loose; this is
usually accompanied by a rather loud buzzing sound, although not always; not
really worth trying to fix; that set may have been the worst problem generator
Philips ever built...