[TechAssist] Re: KP-53S35,coolant damage,need used PS/HV-conv pcb

  • From: "Leonard Caillouet" <lcaillo@xxxxxxxxxxxx>
  • To: <techassist@xxxxxxxxxxxxx>
  • Date: Wed, 13 Aug 2003 06:54:11 -0400

Actually, coolant that stays on a board a while can cause a great deal of
damage.  The coolant is ethylene glycol and glycerin.  The eth gly is a very
good solvent and dissolves crud on the board and absorbs water from the air,
forming a corrosive goo that will eat up traces on boards and legs on
components, as well as provide a conductive path for shorts.  Both
components of the coolant are water soluble and are easy to clean off, but
the stuff gets into some boards and under SMDs and it may be hard to get it
all off.  Usually it is not.  I have repaired most sets by cleaning and
repairing boards, a few have presented problems later.  I think it is a good
idea to explain the possibility of future problems to the consumer and place
the decision and responsibility on them.

Leonard Caillouet
Electronics World
Gainesville, FL
352-332-5608
352-332-5668 FAX

----- Original Message ----- 
From: "Jorge Camboni" <geo@xxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Wednesday, August 13, 2003 1:56 AM
Subject: [TechAssist] Re: KP-53S35,coolant damage,need used PS/HV-conv pcb


> You can also clean it with isopropyl alcohol (90% ++) or acetone
> It's fairly easy, no big deal, coolant doesn't cause any permanent
> damage.
> Jorge
>
>
> At 05:12 p.m. 12/08/03 -0700, you wrote:
> >Board can be cleaned , I use (SIMPLE GREEN) you may have to pull IC"S to
> >clean under them,plain water to flush off the simple green, then air dry
or
> >use a hair dryer or just put in the blast from a fan for two days,
replace
> >any burn parts re install should be good again. if the bladder is damaged
if
> >it caused the leak you can cut a inner the size of the bladder replace
the
> >bladder stack inner patch and bladder  patch first then the bladder seal
> >with silicone and cure for one day.
> >Adolph B. Gower
> >Cordova TV & Electronics
> >10275 Old Placerville Rd. # 5
> >Sacramento, Ca. 95827
> >Ph. (916) 363-6565
> >Fx. (916) 3263-7623
> >agower@xxxxxxxxxxxxxxxxxx
> >Source For used parts and NLA Parts
> >NEC,  MAGNAVOX , ZENITH
> >and many other brands
> >  Fax (916)363-7623
> >Phone (916)363-6565
> >agower@xxxxxxxxxxxxxx
> >----- Original Message -----
> >From: "Ron Miller d.b.a. Country TV" <rlmbkm@xxxxxxxxxx>
> >To: <techassist@xxxxxxxxxxxxx>
> >Sent: Tuesday, August 12, 2003 4:38 PM
> >Subject: [TechAssist] KP-53S35,coolant damage,need used PS/HV-conv pcb
> >
> >
> > > The main PCB chassis on the left side of set ( from back) is distorted
by
> >a
> > > coolant leak.
> > >  Does someone have one in there scrap?
> > > Send info to: rlmbkm@xxxxxxxxxx
> > > P.S. Believe this is a RA-2 chassis 1997.
> > >
> > > Country TV
> > > Ron Miller
> > > Inez, TX. 77968
> > >
> > >
> > >
>
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>
> Jorge Camboni, GY Electronics, Richardson, TX
>
>
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