[TechAssist] Re: Sony KP51HW40 Bad CRT'S ?

Although it may not be bad, it is one of the sets that required all three
CRT's to be replaced for the intermittent hue and flicker issue as cited
below:

      Last Update
      11/13/2003 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. Picture has large shift of hue due to low output of one of the CRT'S
(Can not be corrected by adjusting hue control in menu)



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 CRT warranty for labor will be extended for an
additional year (2 years total) from the date of purchase.

SUPPORTING DOCUMENTS AND GRAPHICS


            Name: mod3.pdf
            Description: D Board location of R8061
            Size: 44631 bytes

            Name: E16315864.pdf
            Description: SM Supplement-1
            Size: 638132 bytes

            Name: mod.pdf
            Description: Close up location of R507 and R508
            Size: 102740 bytes

            Name: Adjmanua.pdf
            Description: CRT adjustment procedure
            Size: 1973554 bytes

            Name: CRTproce.pdf
            Description: CRT replacement procedure
            Size: 41058 bytes

            Name: MOD2.pdf
            Description: A Board location of R507 and R508
            Size: 57510 bytes





MORE INFORMATION

  a.. Unit/Model Details

  b.. Parts

  c.. Links



Unit/Model Detail

            Unit(s): SN Start SN End Factory Family Name Product Category
            KP46WT500 NONE NONE PITT RA6 TVP
            KP51HW40 9000001 ALL PITT RA6 TVP
            KP51WS500 9000001 9038137 PITT RA6 TVP
            KP51WS500 8000001 8016058 STE RA6 TVP
            KP51WS500 9065001 9086666 PITT RA6 TVP
            KP57HW40 9000001 ALL PITT RA6 TVP
            KP57WS500 9000001 9014575 PITT RA6 TVP
            KP57WS500 9200001 ALL PITT RA6 TVP
            KP65WS500 NONE NONE PITT RA6 TVP


Parts

            Part Number Reference Number Description Symptom Code Section
Code PCB Reference Defect Code Repair Code
            873365715 107 CRT (R) KP-46WT500 2433 IMG NONE A A
            873365005 107 CRT (R) KP-51HW40 2433 IMG NONE A A
            873365015 107 CRT (R) KP-51WS500 2433 IMG NONE A A
            873364805 107 CRT (R) KP-57HW40 2433 IMG NONE A A
            873364815 107 CRT (R) KP-57WS500 2433 IMG NONE A A
            873366605 107 CRT (R) KP-65WS500 2433 IMG NONE A A
            873365215 109 CRT (G) KP-46WT500 2433 IMG NONE A A
            873365205 109 CRT (G) KP-51HW40 2433 IMG NONE A A
            873365205 109 CRT (G) KP-51WS500 2433 IMG NONE A A
            873365215 109 CRT (G) KP-57HW40 2433 IMG NONE A A
            873365205 109 CRT (G) KP-57WS500 2433 IMG NONE A A
            873365215 109 CRT (G) KP-65WS500 2433 IMG NONE A A
            873364915 110 CRT (B) KP-51WS500 2433 IMG NONE A A
            873365625 110 CRT (B) KP-46WT500 2433 IMG NONE A A
            873364935 110 CRT (B) KP-51HW40 2433 IMG NONE A A
            873364705 110 CRT (B) KP-57HW40 2433 IMG NONE A A
            873364715 110 CRT (B) KP-57WS500 2433 IMG NONE A A
            873366505 110 CRT (B) KP-65WS500 2433 IMG NONE A A





Bob Waterman, CET® #RI-28
Master Technician License #9109
Service Manager / Parts Manager
Gemini Computer, TV, & Security Alarms
(508)695-7302
(508)695-7769 FAX
geminitv@xxxxxxxxxxxxxxxx
geminitv@xxxxxxx
www.geminicomputertvsecurityalarms.com


----- Original Message ----- 
From: "Keith Trumbla" <keith@xxxxxxxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Tuesday, January 27, 2004 2:36 PM
Subject: [TechAssist] Sony KP51HW40 Bad CRT'S ?


> Customer called, pic is bright blue with white diagonal lines. Went to
house
> found TDA chip on crt socket bad. Didn't have one and Sony is B/O status.
> When I get this part and return to the customer's house, what are my
chances
> that the CRT is the cause ?
> Keith Trumbla
> BEMelectronics.com
> Suite 212-530 Century St.
> Winnipeg Canada
> R3H 0Y4
> Ph.204.775.2875 Fax.204.774-9192
>
> --------------------------------------------------------------------------
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