[TechAssist] Re: sony model kp46wt500 color bad
- From: "J. Knoll" <admin@xxxxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Thu, 2 Feb 2006 17:11:23 -0500
Last Update
10/25/2005 Event ID
E18048974 Model
KP46WT500, KP51HW40, KP51WS500, KP51WS500, KP51WS500, KP57HW40,
KP57WS500, KP57WS500, KP65WS500
Subject
Picture has flicker in background, also changes in hue can occur
SYMPTOMS
Customer complaint:
1. Picture has flicker in background, could be intermittent.
2. The color can experience hue shifts (changing from one color to another.
Hue keeps shifting and not staying constant.
NOTE: For this issue only, the CRTs plus any related parts included in this
bulletin and the
labor to replace them, will be extended to 4 years from date of purchase.
RESOLUTION
Affected units:
Serial Numbers Affected:
Sets with the following serial number ranges may exhibit the flicker
symptom:
KP-51HW40 and KP-57HW40 models: Serial numbers, which have a Zero in second
digit, i.e. 90xxxxx. (not applicable with other models).
WS500 models:
KP-51WS500 ( 9000001-9038137) (9065001-9086666), (800001 - 8016058),
Note: No sets produced between (9038138 -9065000)
KP-57WS500 (9000001 - 9030340), (9200001-9215655)
KP-65WS500 (9000001 - 9016392)
WT500 model:
KP-46WT500 (9000001- 9026103)
Please be aware that less then 1% of these units will exhibit the Flicker
symptom. Please take time to verify the symptom before performing this
bulletin.
If the customer complains of any of the symptoms above pleases do the
following:
Changes two chip resistors on the A-Board:
Step 1
Models: KP-46WT500, KP-51HW40, KP-57HW40, KP-51WS500, KP-57WS500 &
KP-65WS500
See chart, Unit/Model Detail, below to determine if resistor changes are
required.
R508 To 2.2k chip resistor P/N 1-216-825-91
R507 To 2.2k chip resistor P/N 1-216-825-91
See attachments below for resistor location (mod.pdf) & mod2.pdf).
NOTE: An easy way to tell if the resistor value were changed to the new
value is.
Read the resistance value at the junction of the two resistors to ground.
It should read 1.6K if the resistors were changed to the new values.
Step 2: RA-6 Chassis:
Models: KP-46WT500, KP-51HW40, KP-57HW40, KP-51WS500, KP-57WS500 &
KP-65WS500
See chart to determine if resistor changes are required.
Change one resistor on the D Board:
R8061 to 1.8 ohm metal oxide P/N 1-216-392-11
See attachments below for resistor location (mod3.PDF)
Must change all three CRT's.
NOTES:
1. White balance and G-2 should be re-adjusted.
See attached procedure below (Admanua.PDF))
2. See attached E16315864 which contains the SM Supplement-1
3. See the revised CRT adjustment guide attached below (Admanua.PDF)
4. See the revised CRT adjustment procedure attached. (CRTproce.PDF)
Models: KP-46WT500, KP-51HW40, KP-51WS500, KP-57HW40, KP-57WS500, and
KP-65WS500.
NOTES
1. Serial number range indicates in the Unit/Model Detail Chart indicates if
resistor changes are required.
2. Boards should not be changed for this issue but must be modified by the
technician.
If a board does need to be replaced for another reason, see the following:
All affected D Boards have been modified by PTG including all WRPC stock.
A Boards were not modified and should be evaluated for the mod when received
by the
servicer. Currently all boards returned to SAYS are checked for both these
modifications
and are installed if not already done.
3. Be aware the KP-51HW40 and KP57HW40 have different CRT'S used depending
on the
serial numbers. If customer has this symptom refer to the CRT P/N chart
below or SM
Supplement-1 attached, E16315864.pdf, for the correct CRT part number and
other part
changes. If the wrong CRT is used you will get good center focus but poor
side focus.
4. Model KP-51WS500 with serial numbers between:
S/N 8000001-8004298
Do not require the resistor value change for Ref R507 and R508 on the A
Board.
S/N after 8004298 does not require the resistor value change for Ref R8061
on the D
Board.
5. Model KP-46WT500 doesn't require the resistor value change for Ref R507
and R508 on
the A Board or R801 on the D Board.
High Voltage Block Anode lead removal
You might have difficulties removing the Anode Lead from the HVB. If this
occurs please use the following removal method.
Using Freeze spray (Point Coolant spray such as 9-919-587-61) Spray into
the High Voltage Block for at least 5 sec. You must securely grasp the lead
then firmly push down and turn
the lead then pull out the lead from the block. If not successful, repeat
the procedure applying
more downward force on the cable before twisting and pulling back up. After
removing
HV cable please clean frost or dews around cable connection.
Warning:
Caution should be taken when removing the HV lead. Be careful when pulling
on the lead
not to pull so hard as to cause injury to yourself do to the metal frame
holding the CRT's.
Explanation on how to use this document:
This bulletin covers 6 models of projection televisions. All models will
require the replacement of all CRT's, however some models require a resistor
value change. (Please refer to the Unit-Model Detail Chart to determine if
resistor changes are required. Some require the resistors changes that must
be done, or the new CRT'S may exhibit the same symptom).
To minimize confusion, this bulletin is divided into sections based on
similar group models requiring the same steps. Also be aware that the CRT
part numbers in the Service Manual may not be correct. Use the CRT part
number chart at the end of this document. We recommend printing out the file
attachments, some will assist you in finding the resistors and one is an
improved CRT adjustment procedure. Never replace all three CRT'S at one
time, first replace the green and set it up as a reference to the other
CRT'S in the set, and then replace the Red and Blue CRT'S.
For this issue only, the CRTs plus any related parts included in this
bulletin and the labor to replace them, will be extended to 4 years from
date of purchase.
On 2/2/06, Larry E <videotech@xxxxxxxxxxxx> wrote:
>
> Avery, that model is included in a service bulletin from Sony (which I do
> not have) that says a few of those and other models have bad crt`s and a
> few
> other parts that have to be changed, serial numbers for your model # are:
> 9000001 thru 9026103 if your set is a different serial # then your set
> isn`t
> involved. Hopefully some of the Sony
> ASC`s can jump in here and verify if this applies to your set, I`m just
> mentioning this so you don`t spend hours
> on a set for nothing, again this may not apply to your set, Larry E
>
>
> Larry Eastman
> American TV & Electronics
> Crystal River, Fl. 34428
> ----- Original Message -----
> From: <adboydchole@xxxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Thursday, February 02, 2006 8:31 AM
> Subject: [TechAssist] Re: sony model kp46wt500 color bad
>
>
> > Second request, any help will help thanks Avery.
> > Avery Boyd
> > 4666B S. Mingo
> > Tulsa OK 74146
> > Phone 918-665-2400
> > ----- Original Message -----
> > From: <adboydchole@xxxxxxxxxxxx>
> > To: <techassist@xxxxxxxxxxxxx>
> > Sent: Wednesday, February 01, 2006 3:48 PM
> > Subject: [TechAssist] sony model kp46wt500 color bad
> >
> >
> > > I went to a home today to look at a Sony projo model kp46wt500. The
> > overall
> > > black and white tracking seems to be OK. When the color is turned up
> it
> > > looks like the red is missing, it has a bluish green tint. Would some
> one
> > > have a tip on this model Thanks Avery.Avery Boyd
> > > 4666B S. Mingo
> > > Tulsa OK 74146
> > > Phone 918-665-2400
> > >
> >
> >
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TechAssist
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