[TechAssist] Re: RCA D52W20, ITC222, Convergence power supply problem

From: Phil Bader <tjanphyl@xxxxxxxxxxxxxxx>
To: techassist@xxxxxxxxxxxxx
Date: Fri, 22 Jul 2005 17:00:11 -0400
Here's all I find regarding bad convergence from the techrepairCD:
RCA  ~ITC222 D52W20~Convergence bad~~~ITC222~Replace leaky DL032 on 
deflection board~~~~~~

RCA~D52W20Y ATC221~Convergence goes out/bowed after on for a few 
minutes~~~ATC221~Problem may be on the deflection board. Was unable to 
pinpoint where in this case.~~~~~~

RCA~D52W20BYX1 ITC222~Convergence way off after replacing small signal 
board~EEPROMS were transferred over to new board~~~IK210 was 
defective..transfer the new EEPROM back over.~Remember on these 
sets*when replacing the SSB* if there is a small P on corner of 
screen*hold volume on remote for 8 seconds after it reaches minimum.~~~~~

RCA~D52W20BYX1 ITC222~Can not align blue convergence* bottom really 
bowed* possibly either color after replacing SSB.(Or no auto 
convergence.~(Service menu: turn power off for 30 seconds* press vol dn 
and ch dn* simultaneously for 8 seconds* set turns on with service menu 
options)~~ITC222~In service menu* select convergence. If sensor 
calibration was performed when convergence was too far off* it will not 
alighn.~Get crosshatch with straight lines* perform sensor calibration* 
then attempt convergence alignment again. Be sure to store settings* 
then do sensor calibration again.~You must get a green flash of the 
screen after sensor cal and a check in the box. RED flash indicated 
convergence settings are too far off~~~~

RCA~D52W20BYX1  ITC222~no convergence correction~~~ITC222~LP650 
(259271)   DP670 (259246)  & RP632 (259564) 4.7 3W on convergence power 
supply board~~~~~~

HTH,
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/



daryls_tv@xxxxxxx wrote:

>After re-checking the power supply, I discovered that the chopper is not os=
>cillating.  I guess I was in a hurry and used the wrong ground as reference.
>I rechecked every component on the primary side and still not finding anyth=
>ing bad.
>I thought I would sub another chopper into it but I couldn't find any cross=
> for it.  I hate to order one and wait several days only find out that may =
>not be it.
>Daryl=20
>Daryl's TV
>2402 Wyoming Ave.
>El Paso, TX  79903
>915-565-9184 Voice/Fax
>daryls_tv@xxxxxxx
>www.angelfire.com/tv2/daryls_tv
>
>
>----- Original Message -----
>From: Damon <damoneb@xxxxxxxxxxx>
>To: techassist@xxxxxxxxxxxxx
>Subject: [TechAssist] Re: RCA D52W20, ITC222, Convergence power supply prob=
>lem
>Date: Fri, 22 Jul 2005 08:00:20 -0500
>
>  
>
>>=20
>>Daryl,
>>I have yet to see a defective convergence power supply on the ITC 222,
>>HOWEVER.....
>>The CTC 195/197 series has had intermittant conv power shutdown, and the
>>board cost was cheap enough to just replace it entirely. It might be the =
>>    
>>
>way
>  
>
>>to go on this unit.
>>=20
>>On the boards I worked on, I was able to eventually see it fail, then by
>>jumpering  two leads on the primary side I was able to restart it and ver=
>>    
>>
>ify
>  
>
>>it was the smps, and it was not a "shorting" type of failure. The oscilla=
>>    
>>
>tor
>  
>
>>just quits oscillating for no good reason. But in your case oscillation
>>isn't the issue, tranferring power to the secondary is......does the final
>>output drive the transformer at all?
>>=20
>>Damon B
>>Telrad Electronics
>>Fort Wayne IN
>>----- Original Message -----
>>From: <daryls_tv@xxxxxxx>
>>To: <TechAssist@xxxxxxxxxxxxx>
>>Sent: Thursday, July 21, 2005 6:18 PM
>>Subject: [TechAssist] RCA D52W20, ITC222, Convergence power supply problem
>>=20
>>=20
>>    
>>
>>>RCA D52W20, ITC222, Convergence power supply problem
>>>
>>>Another looser here.
>>>Customer claims they changed channels and lost the convergence.
>>>What I found is no control of convergence and a distorted picture.
>>>There are no voltages out of the convergence power supply on the
>>>      
>>>
>>secondarie=3D
>>    
>>
>>>s.
>>>I do have power on the primary of the smps and does appear to be
>>>      
>>>
>>oscillatin=3D
>>    
>>
>>>g.
>>>I checked all of the semi's, resistors and electro's. I ohmed out the
>>>      
>>>
>>switc=3D
>>    
>>
>>>h mode power transformer. I didn't find any bad components.
>>>I hope someone has encountered this before and can give a few pointers.
>>>Thanks,
>>>Daryl
>>>Daryl's TV
>>>2402 Wyoming Ave.
>>>El Paso, TX  79903
>>>915-565-9184 Voice/Fax
>>>daryls_tv@xxxxxxx
>>>www.angelfire.com/tv2/daryls_tv
>>>
>>>
>>>
>>>--=3D20
>>>___________________________________________________________
>>>Sign-up for Ads Free at Mail.com
>>>http://promo.mail.com/adsfreejump.htm
>>>
>>>-----------------------------------------------------------------------=
>>>      
>>>
>---
>  
>
>>---
>>    
>>
>>>This Email List is Public. Remove: http://www.tech-assist.org/remove.htm
>>>Set Vacation
>>>      
>>>
>>mailto:ecartis@xxxxxxxxxxxxx?subject=3Dset%20techassist%20vacation
>>    
>>
>>>Lost Password: http://www.tech-assist.org  and select "Login Problems?".
>>>Email Archives: //www.freelists.org/archives/techassist/
>>>
>>>      
>>>
>>=20
>>=20
>>-------------------------------------------------------------------------=
>>    
>>
>----
>  
>
>>This Email List is Public. Remove: http://www.tech-assist.org/remove.htm
>>Set Vacation mailto:ecartis@xxxxxxxxxxxxx?subject=3Dset%20techassist%20va=
>>    
>>
>cation
>  
>
>>Lost Password: http://www.tech-assist.org  and select "Login Problems?".
>>Email Archives: //www.freelists.org/archives/techassist/
>>    
>>
>
>
>
>
>
>--=20
>___________________________________________________________
>Sign-up for Ads Free at Mail.com
>http://promo.mail.com/adsfreejump.htm
>
>-----------------------------------------------------------------------------
>This Email List is Public. Remove: http://www.tech-assist.org/remove.htm
>Set Vacation mailto:ecartis@xxxxxxxxxxxxx?subject=set%20techassist%20vacation
>Lost Password: http://www.tech-assist.org  and select "Login Problems?".
>Email Archives: //www.freelists.org/archives/techassist/
>
>
>  
>
-----------------------------------------------------------------------------
This Email List is Public. Remove: http://www.tech-assist.org/remove.htm
Set Vacation mailto:ecartis@xxxxxxxxxxxxx?subject=set%20techassist%20vacation
Lost Password: http://www.tech-assist.org  and select "Login Problems?".
Email Archives: //www.freelists.org/archives/techassist/
References:
- [TechAssist] Re: RCA D52W20, ITC222, Convergence power supply problem
  - From: daryls_tv
[TechAssist] Re: RCA D52W20, ITC222, Convergence power supply problem

Other related posts:
