[TechAssist] Re: Sony RA-2A KP-46C65 instantly blows IC601 & R608
- From: "Larry E" <videotech@xxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Fri, 15 Jul 2005 16:43:38 -0400
Kevin, It`s also supposed to open before it eats IC601 but it doesn`t, Larry
E
Larry Eastman
American TV & Electronics
Crystal River, Fl. 34428
----- Original Message -----
From: "Kevin's TV Repair" <kevintv@xxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Friday, July 15, 2005 4:34 PM
Subject: [TechAssist] Re: Sony RA-2A KP-46C65 instantly blows IC601 & R608
> That is what that resistor is there for.
>
> Kevin Wilks
> Kevin's TV Repair
> Penticton BC Canada
> kevintv@xxxxxxx
>
>
> -----Original Message-----
> From: techassist-bounce@xxxxxxxxxxxxx
> [mailto:techassist-bounce@xxxxxxxxxxxxx] On Behalf Of Larry E
> Sent: Friday, July 15, 2005 1:10 PM
> To: techassist@xxxxxxxxxxxxx
> Subject: [TechAssist] Re: Sony RA-2A KP-46C65 instantly blows IC601 &
> R608
>
> Al, thanks for the reply, I checked the 2.2 meg resistor already and
> it`s
> good, main fuse strangely
> enough does not blow, I guess R608 opening saves it, Larry E
>
> Larry Eastman
> American TV & Electronics
> Crystal River, Fl. 34428
> ----- Original Message -----
> From: "Al L" <alleathe@xxxxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Friday, July 15, 2005 3:46 PM
> Subject: [TechAssist] Re: Sony RA-2A KP-46C65 instantly blows IC601 &
> R608
>
>
> > I once had an antenna isolation shorted,ran perfectly on my
> variac,which
> was
> > also an isolation transformer.Hooked up the cable on ac,BAM blown
> fuse.There
> > was 120 VAC on the r-f connector!If I had been holding the cable,and
> touched
> > the rf.....................!Good luck.
> >
> > Al Leatherman
> > 224 RT. 46
> > Mine Hill, NJ 07803
> > 973-361-5796
> > WWW.ALS-TV.NET
> >
> > ----- Original Message -----
> > From: "Gemini Computer & TV" <geminitv@xxxxxxxxxxx>
> > To: <techassist@xxxxxxxxxxxxx>
> > Sent: Friday, July 15, 2005 3:24 PM
> > Subject: [TechAssist] Re: Sony RA-2A KP-46C65 instantly blows IC601 &
> R608
> >
> >
> > > You made me think that the customer mentioned "that they had
> lightning
> > > problems 2 days before set went down". Since it ran on the variac,
> it
> > > would
> > > be doubtful that the problem is in the power supply as they are not
> very
> > > forgiving. I am wondering if they may also have an electrical issue
> at
> > > their
> > > home as a result. Is the set at your shop now?
> > >
> > > Bob Waterman, CETR #RI-28
> > > Master Technician License #9109
> > > Service Manager / Parts Manager
> > > Gemini Computer, TV, & Security Alarms
> > > (508)695-7302
> > > (508)695-7769 FAX
> > > geminitv@xxxxxxxxxxx
> > >
> > >
> > > ----- Original Message -----
> > > From: "Larry E" <videotech@xxxxxxxxxxxx>
> > > To: <techassist@xxxxxxxxxxxxx>
> > > Sent: Friday, July 15, 2005 3:12 PM
> > > Subject: [TechAssist] Re: Sony RA-2A KP-46C65 instantly blows IC601
> &
> R608
> > >
> > >
> > > Bob, don`t know, haven`t got the parts in yet, (ran out of IC601). I
> did
> > > check the customers
> > > ac outlet when I found out the parts were shorted again, had 124
> volts,
> I
> > > guess I`m stupid for
> > > not thinking to plug it straight into the AC at the shop before
> returning
> > > the set, never gave it
> > > a thought, (won`t happen again) the fact that it shorts all 6 pins
> to
> each
> > > other would say a dead
> > > short to me but I sure as hell can`t find one, Thanks for the reply,
> Larry
> > > E
> > > Larry Eastman
> > > American TV & Electronics
> > > Crystal River, Fl. 34428
> > > ----- Original Message -----
> > > From: "Gemini Computer & TV" <geminitv@xxxxxxxxxxx>
> > > To: <techassist@xxxxxxxxxxxxx>
> > > Sent: Friday, July 15, 2005 2:59 PM
> > > Subject: [TechAssist] Re: Sony RA-2A KP-46C65 instantly blows IC601
> &
> R608
> > >
> > >
> > >> Aside of plugging it into the variac at your shop, what happens
> when
> you
> > >> plug it directly into a normal outlet at your shop? Do it still
> short
> the
> > >> regulator or does this only happen at the customer's home?
> > >>
> > >> Bob Waterman, CETR #RI-28
> > >> Master Technician License #9109
> > >> Service Manager / Parts Manager
> > >> Gemini Computer, TV, & Security Alarms
> > >> (508)695-7302
> > >> (508)695-7769 FAX
> > >> geminitv@xxxxxxxxxxx
> > >>
> > >>
> > >> ----- Original Message -----
> > >> From: "Larry E" <videotech@xxxxxxxxxxxx>
> > >> To: <techassist@xxxxxxxxxxxxx>
> > >> Sent: Friday, July 15, 2005 2:50 PM
> > >> Subject: [TechAssist] Sony RA-2A KP-46C65 instantly blows IC601 &
> R608
> > >>
> > >>
> > >> Hi Guys, My week for headache sets, this Sony RA-2A covers the
> following
> > >> models
> > >> KP41T65, 46C65, 48S65, 53S65, & 61S65, went to customers house and
> all
> > > pins
> > >> of IC601 (MX0841AB-F) were shorted to each other, also R608 the .1
> 1/2w
> > >> fusible resistor was open, pulled all of the little blue caps
> around
> > >> IC601
> > >> and checked
> > >> them on the sencore, all ok. I ordered a new IC & resistor,
> installed
> > >> them
> > >> and when
> > >> I powered up the set they instantly blew, pulled set to shop,
> > >> re-installed
> > >> new chip
> > >> & resistor, plugged into variac & brought up slowly, set started
> and
> > > worked
> > >> fine, heres
> > >> the fun part, I brought the set back to the customer hooked it up
> and
> all
> > > I
> > >> get is a
> > >> constant blink of the led, of course IC601 & R608 were blown again,
> > >> Obviously my
> > >> Sencore variac being an isolation transformer let the set run but
> > >> connectiong to the
> > >> customers AC outlet lets the parts short, I have pulled every cap
> in
> the
> > >> "hot" side
> > >> of this power supply and found no shorted caps, checked the 2.2 meg
> > > resistor
> > >> R601, there is no continuity between hot & cold ground, customer
> told
> me
> > >> second
> > >> time out that they had lightning problems 2 days before set went
> down
> but
> > > I
> > >> see
> > >> no arcs etc on board, main fuse was not blown, HOT circuit good,
> seems
> to
> > > me
> > >> it
> > >> has to be hot & cold ground connected somewhere???
> > >> please help if you can, I`m pulling hair out at this point, Larry E
> > >> Larry Eastman
> > >> American TV & Electronics
> > >> Crystal River, Fl. 34428
> >
> >>
> ------------------------------------------------------------------------
> -
> -
> > > --
> > >> -
> > >> This Email List is Public. Remove:
> http://www.tech-assist.org/remove.htm
> > >> Set Vacation
> > >> mailto:ecartis@xxxxxxxxxxxxx?subject=set%20techassist%20vacation
> > >> Lost Password: http://www.tech-assist.org and select "Login
> Problems?".
> > >> Email Archives: //www.freelists.org/archives/techassist/
> > >>
> > >>
> >
> >>
> ------------------------------------------------------------------------
> -
> -
> > > ---
> > >> This Email List is Public. Remove:
> http://www.tech-assist.org/remove.htm
> > >> Set Vacation
> > > mailto:ecartis@xxxxxxxxxxxxx?subject=set%20techassist%20vacation
> > >> Lost Password: http://www.tech-assist.org and select "Login
> Problems?".
> > >> Email Archives: //www.freelists.org/archives/techassist/
> > >>
> > >>
> > >
> > >
> >
> >
> ------------------------------------------------------------------------
> --
> --
> > > -
> > > This Email List is Public. Remove:
> http://www.tech-assist.org/remove.htm
> > > Set Vacation
> > > mailto:ecartis@xxxxxxxxxxxxx?subject=set%20techassist%20vacation
> > > Lost Password: http://www.tech-assist.org and select "Login
> Problems?".
> > > Email Archives: //www.freelists.org/archives/techassist/
> > >
> > >
> >
> >
> ------------------------------------------------------------------------
> --
> ---
> > > This Email List is Public. Remove:
> http://www.tech-assist.org/remove.htm
> > > Set Vacation
> > > mailto:ecartis@xxxxxxxxxxxxx?subject=set%20techassist%20vacation
> > > Lost Password: http://www.tech-assist.org and select "Login
> Problems?".
> > > Email Archives: //www.freelists.org/archives/techassist/
> > >
> >
> >
> >
> ------------------------------------------------------------------------
> --
> ---
> > This Email List is Public. Remove:
> http://www.tech-assist.org/remove.htm
> > Set Vacation
> mailto:ecartis@xxxxxxxxxxxxx?subject=set%20techassist%20vacation
> > Lost Password: http://www.tech-assist.org and select "Login
> Problems?".
> > Email Archives: //www.freelists.org/archives/techassist/
> >
> >
>
>
> ------------------------------------------------------------------------
> -----
> This Email List is Public. Remove: http://www.tech-assist.org/remove.htm
> Set Vacation
> mailto:ecartis@xxxxxxxxxxxxx?subject=set%20techassist%20vacation
> Lost Password: http://www.tech-assist.org and select "Login Problems?".
> Email Archives: //www.freelists.org/archives/techassist/
>
> --------------------------------------------------------------------------
---
> This Email List is Public. Remove: http://www.tech-assist.org/remove.htm
> Set Vacation
mailto:ecartis@xxxxxxxxxxxxx?subject=set%20techassist%20vacation
> Lost Password: http://www.tech-assist.org and select "Login Problems?".
> Email Archives: //www.freelists.org/archives/techassist/
>
>
-----------------------------------------------------------------------------
This Email List is Public. Remove: http://www.tech-assist.org/remove.htm
Set Vacation mailto:ecartis@xxxxxxxxxxxxx?subject=set%20techassist%20vacation
Lost Password: http://www.tech-assist.org and select "Login Problems?".
Email Archives: //www.freelists.org/archives/techassist/
Other related posts:
