[TechAssist] Sony KP-53V45, Convergence problem.... 2nd Request

  • From: daryls_tv@xxxxxxx
  • To: TechAssist@xxxxxxxxxxxxx
  • Date: Tue, 06 Apr 2004 12:20:37 -0500

I am hoping someone could give some needed help on this dog.
Customer is getting a bit upset and justifiably so.  It has been in the shop 
too long.
Please see the original post below.
Thanks,
Daryl
Daryl's TV
2402 Wyoming Ave.
El Paso, TX  79903
daryls_tv@xxxxxxx
www.angelfire.com/tv2/daryls_tv

----- Original Message -----
From: daryls_tv@xxxxxxx
Date: Fri, 02 Apr 2004 11:38:04 -0500
To: TechAssist@xxxxxxxxxxxxx
Subject: Sony KP-53V45, Convergence problem

> 
> Hi,
> Sony KP-53V45
> Ch. # SCC-K90E-A
> Board # A1316-295A
> Originally found a coolant leak on the sweep board.  Replaced the top hat 
> looking seals on the crt's, washed the board and a burn on the 130 volt line 
> was repaired.  Fuses PS601 and PS602 were open.  This restored the picture 
> but it had a convergence problem.  IC808 & IC809 were running extremely hot 
> as compared to IC804, IC806, & IC810.  IC808 was swapped with IC804 and the 
> problem went with the hot IC.  The IC that was getting hot was replaced and 
> the set was fixed. (So we thought).  Two days later, the customer calls that 
> the set wasn't working properly.  The convergence problem was back.  The new 
> IC804 & IC810 were running extremely hot again and so it was switched as 
> before but the hot IC's stayed at the same location this time.  This time we 
> replaced the big convergence IC (IC810) but the problem still exists.  Found 
> tips on checking peeking coils but no bad parts have been found.  This set 
> has been away from the customer for some time and he is getting anxious.
> Any helpful advice or tips welcomed.  Perhaps even if someone has a known 
> good board for sale.
> Thanks,
> Daryl
> Daryl's TV
> 2402 Wyoming Ave.
> El Paso, TX  79903
> daryls_tv@xxxxxxx
> www.angelfire.com/tv2/daryls_tv

> 
> 
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