[TechAssist] Re: Mitsubishi VS5007R AND VS5017R SCHEMATICS
- From: "Gemini Computer & TV" <geminitv@xxxxxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Mon, 18 Aug 2003 08:31:23 -0400
Don't forget to thermally check IC201 itself. My cousin's 35" Mitsubishi had
the same symptom and I thought I was chasing bad capacitors but I finally
found out it was the IC. Just thought I would mention this because it is
easy to check and might save you some hassle and time.
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: "Terry H." <tvdoc@xxxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Monday, August 18, 2003 8:13 AM
Subject: [TechAssist] Re: Mitsubishi VS5007R AND VS5017R SCHEMATICS
> Jorge, I'm back in the middle of a VS6004 for the same problem Repaired it
a
> few months ago for that problem and several others. Now, the vertical
> rolling is back, just not constant. We're both going to end up marrying
> these. If you've changed the caps around IC2A01 and B01, then I'd look on
> the sweep side at IC201 which is where I'm going to work over next. Unit
is
> too big to bring back to the shop. If you correct yours before I get done,
> please post and I'll do the same. Good luck.
> Terry H.
> The TV Shop
> Gonzales, Tx
>
> ----- Original Message -----
> From: "Jorge Camboni" <geo@xxxxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Sunday, August 17, 2003 8:29 PM
> Subject: [TechAssist] Re: Mitsubishi VS5007R AND VS5017R SCHEMATICS
>
>
> >
> > Leonard, in the case of the 5007R it had been done (?) maybe
> > 1 year or 2 ago, I found it resoldered here and there, you know,
> > not a very neat job, but the only problem was picture rolling
vertically,
> > in other words, no vertical sync. I dismanteled it at the customer's
> > place and brought the 2 main modules to the workshop.
> > I left the power supply board aside because it was obvious the
> > problem was not there. After esr-ing all the way, found a bunch
> > of 10mf 50 volts dry caps and a few more, don't remember the
> > values now. One of them coincided with a former tip from WA6ATI , so
> > I felt confident and put everything together again.. SAME PROBLEM
> > I really feel I need the schematic, I can not go on blind testing
> component
> > after component, whitout even knowing the sinc pulses path..
> >
> > The other one is a VS4517R (same as VS5017R) and it came with a
> > TO220 pnp transistor (the kind formerly used for vert out) and a 100
ohms
> > resistor burned-open (I had to guess the value) After that it comes on
> normally
> > (HV - fils OK) but with a nice black screen, nothing you do can awake
the
> > tubes,
> > the voltage at the video outputs' collectors is a nice 224v all the
time.
> > I had not paid attencion to the video and in-out board on the side but
> > there are
> > several UGLY traces of capacitors leaking hard..
> >
> > To put it a little worse, I ESTIMATED LOW, which has been extremely
> stupid
> > from my part!! I had fixed several of them in the past, but it seems I
> 've
> > forgotten
> > to change ALL the caps and ESTIMATE HIGH.
> >
> > Thank you very much for your help
> > best regards
> > Jorge
> >
> >
> >
> > At 01:20 p.m. 17/08/03 -0400, you wrote:
> > >Jorge, you will need to check all five major boards carefully for leaky
> > >caps. Estimate high. We rebuild lots of these and almost always see
> over
> > >100 bad electrlytics on the V11 and 30 - 60 on the V12. If you don't
go
> > >over the boards carefully and clean them up and resolder bad joints you
> can
> > >expect more problems. These manuals were never available from Mits
> > >electronically. Unless someone has scanned it you won't find it
online.
> I
> > >have a copy on paper for both, if you need some part of it I can fax it
> to
> > >you. What kind of problems are you having? I don't have anything on
the
> > >ctc211a.
> > >
> > >Leonard Caillouet
> > >Electronics World
> > >Gainesville, FL
> > >
> > >
> > >----- Original Message -----
> > >From: "Jorge Camboni" <geo@xxxxxxxxxxxxx>
> > >To: <techassist@xxxxxxxxxxxxx>
> > >Sent: Sunday, August 17, 2003 5:41 AM
> > >Subject: [TechAssist] Mitsubishi VS5007R AND VS5017R SCHEMATICS
> > >
> > >
> > > >
> > > > Mitsubishis VS5007R (chassis V11) and VS5017R (chassis V12)
> > > > ruining my life. Anybody knows a source for those service manuals
> > > > or just schematics ONLINE for this models/chassis?? CUSTOMERS WON'T
> > > > WAIT until a paper manual arrives.... (no sams, no tvdiagrams)
> > > > Looking for CTC211A schematics, as well..
> > > > TIA
> > > > Jorge
> > > >
> > > >
> > > >
> > > > Jorge Camboni, GY Electronics, Richardson, TX
> > > >
> > > >
> >
>
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> > Jorge Camboni, GY Electronics, Richardson, TX
> >
> >
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