[TechAssist] Re: Fw: Re: Proscan Model PTK188AC chassis CTC188A
- From: "Larry Poffen" <lpoffen@xxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Fri, 10 Jun 2005 16:32:07 -0500
yes I have the RCA Svc info. & I know what you mean. I can force the S/W
mode power supply on & most of the voltages are about 70% of what they are
supposed to be. When I try to start it up then it does the same thing (3
pulses & then back to where it was) the voltage on the vert output ic is
almost normal, so don`t think it is shorted or a problem. Thanks to Bob
Waterman I have troubleshooting info now. Appreciate the response. Larry
Larrys TV & Computer Service
Broken Arrow OK 74011
phone 918-455-1041
Fax 918-451-4485
e-mail lpoffen@xxxxxxx
----- Original Message -----
From: "Larry E" <videotech@xxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Friday, June 10, 2005 4:02 PM
Subject: [TechAssist] Re: Fw: Re: Proscan Model PTK188AC chassis CTC188A
> Larry, I could only find one other tip besides CR4109, (which you have
> already changed) , my cr4109 tip also says to check solder on collector of
> Q4101.
> which is off pin 17 (primary side) of T4101,
> The other tip I found is; Dead set, set pulses then shuts down- fix was
> "SRS
> right channel speaker has 18volts dc on speaker out, U1308 is shorted"
> Do you have the schematics for the set??? 15 volt line goes all over the
> place
> in that set, it will be nearly impossible to fix without the schematic,
> good luck,
> Larry E
>
>
> Larry Eastman
> American TV & Electronics
> Crystal River, Fl. 34428
> ----- Original Message -----
> From: "Larry Poffen" <lpoffen@xxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Friday, June 10, 2005 12:33 PM
> Subject: [TechAssist] Fw: Re: Proscan Model PTK188AC chassis CTC188A
>
>
>> Update on Proscan CTC188, Have rang flyback, rings 45+ times. This set
> is
>> one of the most complicated sets I have seen. Did RCA make a
>> troubleshooting or training manual for the CTC188? The 135 Volts seems
>> OK
>> when it tries to fire up, but the 15V is low, around 10-11V as it fires
> up.
>> I sure would appreciate some direction on this set. Caps in pwr supply,
>> that I have ckd are ok. Is there any service info on troubleshooting
>> this
>> set out there? If I sound frustrated it is because I am!!!! Thanks
>> Larry
>>
>> Larrys TV & Computer Service
>> Broken Arrow OK 74011
>> phone 918-455-1041
>> Fax 918-451-4485
>> e-mail lpoffen@xxxxxxx
>> ----- Original Message -----
>> From: "Larry E" <videotech@xxxxxxxxxxxx>
>> To: <techassist@xxxxxxxxxxxxx>
>> Sent: Tuesday, June 07, 2005 3:28 PM
>> Subject: [TechAssist] Re: Proscan Model PTK188AC chassis CTC188A
>>
>>
>> > Larry, sounds like a bad flyback to me, have seen it
>> > quite a few times, try ringing the fly or just replace it,
>> > good luck, Larry E
>> >
>> > Larry Eastman
>> > American TV & Electronics
>> > Crystal River, Fl. 34428
>> > ----- Original Message -----
>> > From: "Larry Poffen" <lpoffen@xxxxxxx>
>> > To: <techassist@xxxxxxxxxxxxx>
>> > Sent: Tuesday, June 07, 2005 3:52 PM
>> > Subject: [TechAssist] Proscan Model PTK188AC chassis CTC188A
>> >
>> >
>> >> Need some advise on this proscan Chassis CTC188A Unit will try to
>> >> start,
>> >> but will shut down immediately, With H/V block disconnected will
>> >> pulse
> 3
>> >> times & then shut off. I have replaced CR4109 & that didn` help.
>> > Customer
>> >> said before it went out he had to try numerous times to get it to come
>> >> on,
>> >> but once it was on would work indefinitely. His wife turned it off 7
> has
>> >> been off since. Any tips or ideas? TIA Larry
>> >>
>> >> Larrys TV & Computer Service
>> >> Broken Arrow OK 74011
>> >> phone 918-455-1041
>> >> Fax 918-451-4485
>> >> e-mail lpoffen@xxxxxxx
>> >>
>> >>
>>
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