[TechAssist] Re: Phillips 25B800 , shut down, need schematic

  • From: larry <schntv@xxxxxxxxxxxx>
  • To: techassist@xxxxxxxxxxxxx
  • Date: Mon, 09 Aug 2004 17:19:40 -0400

the 22 ohm is ok and i have 200 volts when i pull the crt 
socket. but only 135 when crt screen is turned up.
  , i cant help but think this is related to the vertical 
trouble originally.
Thank you all,
Larry


al m wrote:
> Check R460 and D460 and R58 or 508 on CRT board 22ohm resistor.
> Al Marquardt
> ampm@xxxxxxx
> Al Marquardt Electronic Repair
> 206 W Main
> Girardville Pa. 17935
> ----- Original Message ----- 
> From: "larry" <schntv@xxxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Monday, August 09, 2004 4:38 PM
> Subject: [TechAssist] Phillips 25B800 , shut down, need schematic
> 
> 
> 
>>phillips 25b800, had no vertical,
>>I cant seem to find a schematic of the crt board for this chassis.
>>replaced vert ic,
>>  rectifier, resistor,  2 electrolytics.
>>comes on for 4 seconds then shutdown.
>>too much screen drive.
>>white with retrace.
>>adjusting screen control is very sensitive.
>>can a shorted vert. cause video damage?
>>Thank you,
>>Larry
>>
>>-- 
>>Schneider TV & Electronic Inc.
>>5415 N. Wooster ave.
>>Dover, Ohio 44622       www.geocities.com/schntv2000/
>>330-343-0768         FCC. first class & Extra class K8WLY
>>
>>
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-- 
Schneider TV & Electronic Inc.
5415 N. Wooster ave.
Dover, Ohio 44622       www.geocities.com/schntv2000/
330-343-0768         FCC. first class & Extra class K8WLY


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