[TechAssist] Re: RCA F32672SB CTC187CL3 eats the HOT
- From: "Gemini Computer & TV" <geminitv@xxxxxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Fri, 23 Jan 2004 12:04:53 -0500
If you have those symptoms, check for ringing on the base of the HOT and the
collector of the horizontal driver transistor. Then check to see if R4402
(22 ohm I think) might be open.
Bob Waterman, CET® #RI-28
Master Technician License #9109
Service Manager / Parts Manager
Gemini Computer, TV, & Security Alarms
(508)695-7302
(508)695-7769 FAX
geminitv@xxxxxxxxxxxxxxxx
geminitv@xxxxxxx
www.geminicomputertvsecurityalarms.com
----- Original Message -----
From: "Larry E." <videotech@xxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Friday, January 23, 2004 12:04 PM
Subject: [TechAssist] Re: RCA F32672SB CTC187CL3 eats the HOT
> Mando, thanks for the reply, Reg. B+ was 147 volts, I don`t have the sm so
I don`t
> know if this is normal, Larry E
>
> Larry Eastman
> American TV & Electronics
> Crystal River, Fl. 34428
>
> armando guerra wrote:
>
> > First I would check and see what the reg.B+ is running at.If high,I
would replace
> > C4105 and C4107 in the reg.ckt. HTH
> > Mando
> > Birdie's TV & Electronics
> > Casa Grande,AZ
> >
> > Larry E. wrote:
> >
> > > Hi Guys, I don`t have the manual and didn`t see it downloaded in the
> > > members area, This set
> > > was butchered by another "shop", seems the HOT runs very hot so he
> > > decided to mount
> > > the HOT on a large heatsink with a computer fan attatched to the
> > > heatsink and used speaker
> > > wire to get the AC to the transformer he glued onto the board tray!!
He
> > > has replaced the fly
> > > with an oem, needless to say the HOT is dead shorted and now he isn`t
> > > returning the customers
> > > calls. Customer says after the fly and HOT were changed together the
set
> > > ran for 3 weeks. I
> > > have of course removed the fan, heatsink, wiring etc. etc. I will
> > > resolder the hdt, the coil on the
> > > base of the HOT, install a new oem HOT, but obviously this will just
get
> > > me back to the original
> > > problem of the HOT running so hot it destroys itself, if someone could
> > > download the print to
> > > the members area or tell me if a 188 print is the same I would greatly
> > > appreciate it, as always
> > > Thanks in advance, Larry E
> > >
> > > Larry Eastman
> > > American TV & Electronics
> > > Crystal River, Fl. 34428
> > >
> >
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