Question about Proscan PS27108 TV

1 Answer

Pincushion Problems Hi, My Proscan model PS27108 w/CTC187BF chassis has a strange problem. Everything is ok with the set other than the horizontal scan being too wide and somewhat hourglass shaped. The OSD images including the channel numbers at the top right corner are barely visible due to the hourglass shape of the picture. Vertical height appears to be okay, but there is also a slight jitter in the picture that occurs along with the pincushion problem. There are no black areas on the sides (picture always fills the screen)and adjusting the screen control on the flyback xfmr has very little to no effect on the problem. I can access the menu for setting the EEPROM parameters but I don't think the problem is related to the EEPROM. All of the tuner and microprocessor shield ground connections have all been resoldered at an earlier time long before the pincushion problem started. Any help would be greatly appreciated! Thanks in advance!

Posted by Dave Anders on

  • josien Jan 01, 2008

    My picture is too big for the screen. It is too big both horizontally and vertically. I tried the help desk but they could not solve the problem. Thanks

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1 Answer

Henry Thomas

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Check the cap that couple the horizontal transistor, this could be bad replace the flyback.all caps and transistors in that circuit should be cheked.good luck.

Posted on Apr 04, 2007

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