[TechAssist] partial fix,RCA P46811LV, PTK195AA , need convergence power supply parts ID. R19717

  • From: Phil Bader <tjanphyl@xxxxxxxxxxxxxxx>
  • To: techassist@xxxxxxxxxxxxx
  • Date: Mon, 25 Jul 2005 14:01:06 -0400

I still have the bowed picture and no output from the converg. power 
supply board.I ordered another STK730-130. Before I install it, I found 
an open 1 watt resistor on the same board: R19717. Bands LOOK like 
brn-blk-brn , but can't be sure.  need value.
Phil Bader

Philip Bader
Jan Phyl TV Inc. (estab. 1976)
3420 Recker Hwy. Winter Haven, Fl. 33880
Fax (863) 299-8821
email: tjanphyl@xxxxxxxxxxxxxxx
personal/ alt. email: pbader@xxxxxxxxxxxxxxx
see our ad at:
http://jan-phyl-television-pc-monitor-service.9601288257006.worldpages-ads.com/



Phil Bader wrote:

>A quick check of the converg. power supply board showed only a few volts 
>output, so I ordered another STK730 IC for that module.BTW If I unplug 
>that AC wire/plug from the main board that plugs into the conv. power 
>supply (delivers the 120VAC) the geometry is unchanged, so with or 
>without the conv.PS even powered,same look? I think the STK is it. Will 
>install and see.This is a likely suspect since it started with power 
>outtages. You are right, it could be a corrupt eeprom. If so, I can 
>basically just go into the service menu and do a converg. alignment back 
>where it belongs without replacing the eeprom? When we say "corrupted 
>eeprom" it really means some of the values changed,thereby affecting 
>that parameter,I ASS-U-ME!
>;-)
>Thanks for the help.
>Phil
>
>Philip Bader
>Jan Phyl TV Inc. (estab. 1976)
>3420 Recker Hwy. Winter Haven, Fl. 33880
>Fax (863) 299-8821
>email: tjanphyl@xxxxxxxxxxxxxxx
>personal/ alt. email: pbader@xxxxxxxxxxxxxxx
>see our ad at:
>http://jan-phyl-television-pc-monitor-service.9601288257006.worldpages-ads.com/
>
>
>
>Damon wrote:
>
>  
>
>>Did you check the Convergence Power supply to see if it was running? Can you
>>adjust anything in the Convergence circuit? BTW I think the Convergence
>>board BOWS only the top and bottom of the picture when the power supply
>>shuts off.......I think I've had a couple of these units intermittantly turn
>>itself off, and the price of the board was cheaper than spending hours
>>identifying the intermittant.
>>
>>I think I'd check for adjustability and EEprom storage capability
>>first....pick a grid point, adjust it out of specs a little, store it, then
>>back out (use only one out of 3 colors, keep a reference color). Go back in
>>and see if it "remembers", if so, then the EEprom most likely just lost it's
>>DATA.
>>.....and you don't have to invest in a new Conv Board. But if it needs one,
>>you will RUE the day all manufacturers started putting the sensors on the
>>edges of their screens. Getting "green-OK" is a pain.
>>
>>Damon B
>>Telrad Electronics
>>Fort Wayne IN
>>----- Original Message ----- 
>>From: "Phil Bader" <tjanphyl@xxxxxxxxxxxxxxx>
>>To: <techassist@xxxxxxxxxxxxx>
>>Sent: Thursday, July 21, 2005 3:25 PM
>>Subject: [TechAssist] partial fix,RCA P46811LV, PTK195AA bowed, jagged
>>buzzing pix after home power flickered
>>
>>
>> 
>>
>>    
>>
>>>Partial fix. The jagged picture looked like arc, so I reseated the HV
>>>input lead to the HV Splitter block.Then it cleared up.That was it. Now
>>>the bowed display. Since the bow happened after multiple power
>>>outtages,think the eeprom got corrupted?
>>>Phil
>>>
>>>Philip Bader
>>>Jan Phyl TV Inc. (estab. 1976)
>>>3420 Recker Hwy. Winter Haven, Fl. 33880
>>>Fax (863) 299-8821
>>>email: tjanphyl@xxxxxxxxxxxxxxx
>>>personal/ alt. email: pbader@xxxxxxxxxxxxxxx
>>>see our ad at:
>>>
>>>   
>>>
>>>      
>>>
>>http://jan-phyl-television-pc-monitor-service.9601288257006.worldpages-ads.com/
>> 
>>
>>    
>>
>>>Phil Bader wrote:
>>>
>>>   
>>>
>>>      
>>>
>>>>Customer said the house power failed 4 times. After that the set looked
>>>>this way. I can make out the OSD and tuner video and sound, but the
>>>>picture js very bowed, distorted with a kind of "christmas tree
>>>>jaggedness. I was thinking the main power supply was faulty. I unplugged
>>>>the main AC wires to the converg. power supply board but same. ALSO!:
>>>>The screen G2 wire let go from inside the fly.Looks like a small peice
>>>>is still in there. Am I screwed there?
>>>>Phil
>>>>
>>>>
>>>>
>>>>     
>>>>
>>>>        
>>>>
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