[TechAssist] Re: Fw: 20GT375 CTC176E No channels above 50 UPDATE
- From: Barry Thompson <barrystv@xxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Fri, 21 Oct 2005 07:44:20 -0400
You have a bad mix osc ic or bad switching tansisters,I will send you a flow
chart.
Barrys TV
Ottawa Ontario
Canada
----- Original Message -----
From: "al m" <ampm@xxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Thursday, October 20, 2005 8:42 PM
Subject: [TechAssist] Re: Fw: 20GT375 CTC176E No channels above 50 UPDATE
> Been over this thing too many times. The problem is someone else did the
> first tuner solder but I can't find any cracks or splashes other than the
> corner where the ground wire is soldered was cracked again.
> Al Marquardt
> ampm@xxxxxxx
> Al Marquardt Electronic Repair
> 206 W Main
> Girardville Pa. 17935
> ----- Original Message -----
> From: "terry goldstein" <tgolds5559@xxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Thursday, October 20, 2005 8:29 PM
> Subject: [TechAssist] Re: Fw: 20GT375 CTC176E No channels above 50 UPDATE
>
>
>> Al. also if you did the tuner work, be sure to check and see of you
>> didn't
>> bridge the R7119 to ground, lower right hand corner of tuner with the
>> chasis
>> upside down and rf connector facing you
>> tgolds5559@xxxxxxxx
>> Terry's TV & electronics
>> 212 Bank ST
>> Oak Harbor Ohio 43449
>> (419) 898-9641
>> ----- Original Message -----
>> From: "al m" <ampm@xxxxxxx>
>> To: <techassist@xxxxxxxxxxxxx>
>> Sent: Thursday, October 20, 2005 7:53 PM
>> Subject: [TechAssist] Re: Fw: 20GT375 CTC176E No channels above 50 UPDATE
>>
>>
>>> I changed both IC's and same thing. I did notice the AGC isn't changing.
>> Put
>>> IF in from My sencore and Perfect picture and AGC is down to 5V.Checked
>>> voltages on the op amp outputs with the cable connected and they are
>> within
>>> ( . )1V. This has got me by the balls. It;s only a 20" tv, but I would
>> like
>>> to find the problem. Any Ideas?
>>>
>>> Al Marquardt
>>> ampm@xxxxxxx
>>> Al Marquardt Electronic Repair
>>> 206 W Main
>>> Girardville Pa. 17935
>>> ----- Original Message -----
>>> From: "al m" <ampm@xxxxxxx>
>>> To: "tech assist" <techassist@xxxxxxxxxxxxx>
>>> Sent: Wednesday, October 19, 2005 2:01 PM
>>> Subject: [TechAssist] Fw: 20GT375 CTC176E No channels above 50
>>>
>>>
>>> >
>>> >>I know I saw this here but I can't find it in the archives or my tips.
>>> >>I
>>> >> think you replace U7401 for this. I know anything below 50 is U7301.
>>> >> Al Marquardt
>>> >> ampm@xxxxxxx
>>> >> Al Marquardt Electronic Repair
>>> >> 206 W Main
>>> >> Girardville Pa. 17935
>>> >>
>>> >
>>>
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