[TechAssist] Re: Fw: [TechAssist-B] Re: RCA-27"TV-M#27649,C#CTC203,Vert

  • From: Jim Myers <jr.myers@xxxxxxxxxxx>
  • To: techassist@xxxxxxxxxxxxx
  • Date: Mon, 19 Sep 2005 13:22:48 -0500

215531

The Old Master Technician
********************************
Since 1972                     *
Jim Myers                      *
Telrad Electronics             *
Fort Wayne Indiana             *
********************************


Don Hartigan wrote:
> Need part# for U14501=TDA8177...TIA...
> Don of HARTS-TVCR"ASC"
> 9 Robert St.,Oromocto,NB,Canada,E2V3N2
> Tel#506-357-9785,Fax#506-357-6010
> hartstv@xxxxxxxxxxx
> ----- Original Message ----- 
> From: "Don Hartigan" <hartstv@xxxxxxxxxxx>
> To: <repair@xxxxxxxxxxxxxxx>
> Sent: Monday, September 19, 2005 2:03 PM
> Subject: Re: [TechAssist-B] Re: RCA-27"TV-M#27649,C#CTC203,Vert
> 
> 
> 
>>Yes,it checked OK,Al...........
>>Don of HARTS-TVCR"ASC"
>>9 Robert St.,Oromocto,NB,Canada,E2V3N2
>>Tel#506-357-9785,Fax#506-357-6010
>>hartstv@xxxxxxxxxxx
>>----- Original Message ----- 
>>From: "al m" <ampm@xxxxxxx>
>>To: <repair@xxxxxxxxxxxxxxx>
>>Sent: Monday, September 19, 2005 1:04 PM
>>Subject: [TechAssist-B] Re: RCA-27"TV-M#27649,C#CTC203,Vert
>>
>>
>>
>>>Usually the vertical B+ filter cap off the flyback causes foldover. Did 
>>>you
>>>change that?
>>>Al Marquardt
>>>ampm@xxxxxxx
>>>Al Marquardt Electronic Repair
>>>206 W Main
>>>Girardville Pa. 17935
>>>----- Original Message ----- 
>>>From: "Don Hartigan" <hartstv@xxxxxxxxxxx>
>>>To: <repair@xxxxxxxxxxxxxxx>
>>>Sent: Monday, September 19, 2005 11:24 AM
>>>Subject: [TechAssist-B] RCA-27"TV-M#27649,C#CTC203,Vert
>>>
>>>
>>>
>>>>Unit had 1/2 screen of vert. sweep.Replaced the TDA8177 with a
>>>>TDA8172[data sheets on these 2 ic's are identical].This restored my 
>>>>vert.
>>>>sweep to full screen but the top of pix has bad retrace,ie,looks like
>>>>vert. foldover.I checked all resistors,caps in the vert. cct.Also 
>>>>replaced
>>>>the T-chip & Eprom.Don't have a TDA8177 in stock.Wondering if I have 
>>>>shot
>>>>myself in the foot using a TDA8172 as a test replacement & have created
>>>>this problem using this sub.Has anyone used a TDA8172 to replace the
>>>>TDA8177?I will order the TDA8177,but wondering if I have missed 
>>>>something
>>>>that may be causing this problem.....TIA.....
>>>>Don of HARTS-TVCR"ASC"
>>>>9 Robert St.,Oromocto,NB,Canada,E2V3N2
>>>>Tel#506-357-9785,Fax#506-357-6010
>>>>hartstv@xxxxxxxxxxx
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>>
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