[TechAssist] Re: RCA Combo T19408 Vert Sweep Help
- From: "John at Main TV" <maintv2004@xxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Thu, 17 Jun 2004 11:51:24 -0600
Vertical drive comes from IV001 pin 22 thru RV006 (1.8K-1/10 w) to BV001 pin
1.(860mv P/P) . Also there is TV030 at that point that could short the
signal to ground. On the defl module vertical drive comes in on pin 1, thru
RF517 (470 ohm) to the vertical output pin 4. B+ for the output is +26v on
pin 2 coming from flyback pin 10 thru DL45 and RL46. IF01 (TA8403K) is a
common failure. John.
John Mielke
Main TV
636 main St.
Longmont, Co
phone 303 776 6955
fax 303 776 0792
maintv2004@xxxxxxxxxxx
----- Original Message -----
From: "Bob@Bobs tv" <woodman1@xxxxxxxx>
To: "TechAsist M" <techassist@xxxxxxxxxxxxx>
Sent: Thursday, June 17, 2004 9:45 AM
Subject: [TechAssist] RCA Combo T19408 Vert Sweep Help
> RCA T19408/Combo
> No vert sweep, then shut down.
> Working on this unit with no print, (before shut down) Found no
drive to the vert output TA84303K... On the main board, the set uses a
TA1268 chip pin 22 (vert drive) has a nice clean 2v p/p at turn on.. But
tracing thru the main board I can't find it anywhere else. Any help greatly
appreciated or a print of the main board.. I had the same model a few months
ago with no vert/sweep and found a small resistor in the vcc feed open..
>
> Bob,
>
> Bobs TV Worcester, ma
>
> woodman1@xxxxxxxx
>
> Main 508-853-1482
> Fax 508-853-1480
>
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