[TechAssist] Re: Fw: Re: Proscan Model PTK188AC chassis CTC188A
- From: "Larry E" <videotech@xxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Fri, 10 Jun 2005 17:02:30 -0400
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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