[TechAssist] Re: Panasonic CT-32HC43G Wont turn on
- From: Ed Gaidies <teltek@xxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Sat, 26 Feb 2005 21:43:45 -0500
Jeff;
Sounds very familiar to an old Toshiba problem.
Sounds like there is not a constant discharge
between the CRT aquadad and Chassis ground.
Affecting any functions of the micro, should mean
corruption by arc.
A while back, Toshiba decided to add a piece of
metallic tape over the Micro and route it to a
Chassis ground.
Now..this is back in the 90's.
I have the Toshiba bulletin, but presume it wont
help on the Panasonic.
Just something to keep in mind.
-Ed-
Tel-Tek Electronics
Ontario-Canada
teltek@xxxxxxxxx
teltek3@xxxxxxxxxxxx
Jeff Farnsworth wrote:
> I posted the fix before and didnt see if you had tryed it. I just got
> another one yesterday---and the pisser is that I just put a new crt in it
> the friday before. The usual symptom (and this one had a slightly different
> symptom) is that the tv shuts off and will not turn back on till you unplug
> it. The symptom on the set I did yesterday was that it would snap and then
> they couldn't control the volume until they unplugged and replugged it.
>
> The cure was to carefully remove the pin guide on the crt--remove all of the
> old silicone and replace the silcone. I take a swab stick cut at an angle
> to get the new silicone between the pins so there is no possibility of
> another gap. I believe I've done 4 of them now and 2 of them had visible
> burt carbon traces and this brand new one had an in your face trace---after
> one stinking week. All four were 32" sets allthough I understand it may also
> effect 36" sets too. This last set with the brand new crt was the only one
> that the customer described snapping and visible light coming from the back
> of the set. The rest was usaully where they turned it off--and it would not
> come back on.
>
> TV Doctor
> Avalon, Wi
> ----- Original Message -----
> From: "Shaun" <satguy@xxxxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Saturday, February 26, 2005 6:59 PM
> Subject: [TechAssist] Re: Panasonic CT-32HC43G Wont turn on
>
>
>
>>This set looks like new still inside, no leaking on any caps and no black
>>residue anywhere. Found this on the TechAssist website but the cap in my
>
> set
>
>>is good.
>>
>>38.) Bob Hibbard, Make: Panasonic, Model: CT36HX41E, Chassis CT32HX41,
>>Problem: Set intermittently shuts down. Must unplug to turn on again.,
>>Cure: C524 (.22uf 100V) in the ABL circuit shorted (no ABL operation
>
> causing
>
>>shutdown) Replace with .22uf 250V device to prevent repeat failure. RJH
>>I am at a loss on this set I remember at one time someone tried to
>
> download
>
>>the schematic but it didn't work so it was taken off maybe they can try to
>>upload it again. Leonard Caillouet told me the file name was
>>CT-32HC43G_SIMP.zip in the downloads area. I am thinking the problem is in
>>the ABL or x-ray protect area but I need the schematic and this is a shop
>>set so trying to keep the cost down since I already put in a new flyback.
>>
>>Advanced Electronics
>>Fort Morgan, CO 80701
>>
>>satguy@xxxxxxxxxxxxx
>>----- Original Message -----
>>From: "Technotronic Dimensions" <steve@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
>>To: <techassist@xxxxxxxxxxxxx>
>>Sent: Saturday, February 26, 2005 4:16 PM
>>Subject: [TechAssist] Re: Panasonic CT-32HC43G Wont turn on
>>
>>
>>
>>>Have seen similar problems like described in other sets due to caps that
>>>leaked electrolyte due to a power surge. I too thought it was a bad
>>
>>flyback,
>>
>>>but there was HV or at least some of it partially at times when the set
>>
>>was
>>
>>>attempted to power up. The flashing LED is a common association with the
>>
>>bad
>>
>>>caps too.
>>>
>>>Look for swelled domes on electrolytics, or green residue on the
>
> negative
>
>>>leeds on the electrolytics around the flyback, and the STR regulators
>
> (if
>
>>>any) in this set.
>>>Additionally , turn over the PCB, and on the foil , look for BLACK
>>>discoloration on the foil. If you find any, I bet it corresponds with
>
> the
>
>>>negative leeds on an electrolytic. If any cap looks like it has leaked
>>>electrolyte , replace it of course. This set you have is too new for the
>>>caps to have dried out so quick. Power surges, lightning storms etc
>
> tend
>
>>to
>>
>>>make SMPS electrolytics 'pee' or leak out the electrolyte when the AC
>
> line
>
>>>frequency becomes erratic or unstable.
>>>
>>>Steve Hearns
>>>Technotronic Dimensions, NY [USA]
>>>WWW.TECHNOTRONIC-DIMENSIONS.COM
>>>1-877-817-9885 (Voice / Fax Toll Free - US Only)
>>>E-Mail: Steve@xxxxxxxxxxxxxxxxxxxxxxxxxxx
>>>
>>>
>>>----- Original Message -----
>>>From: "Shaun" <satguy@xxxxxxxxxxxxx>
>>>To: <techassist@xxxxxxxxxxxxx>
>>>Sent: Saturday, February 26, 2005 4:58 PM
>>>Subject: [TechAssist] Re: Panasonic CT-32HC43G Wont turn on
>>>
>>>
>>>OK back to this monster, I replaced the flyback (TXFFTO3GSER) original
>>
>>part
>>
>>>and it still will not come on. When power is pushed I hear a couple
>
> clicks
>
>>>and then sounds like it is going to come then goes into shut down and
>
> the
>
>>>front led blinks 5 times. I have checked diodes and caps but have found
>
> no
>
>>>bad parts. Does anyone have a service manual or any other tips on this
>>>model?
>>>
>>>Shaun
>>>
>>>Advanced Electronics
>>>224 West Riverview Ave.
>>>Fort Morgan, CO 80701
>>>----- Original Message -----
>>>From: "tvservice" <tvservice@xxxxxxxxxxxxx>
>>>To: <techassist@xxxxxxxxxxxxx>
>>>Sent: Wednesday, August 18, 2004 3:05 PM
>>>Subject: [TechAssist] Re: Panasonic CT-32HC43G Wont turn on
>>>
>>>
>>>
>>>>I rang with Sencore LC75 but can't remember the number of rings it
>
> had.
>
>>I
>>
>>>>believe it was questionable like the RCA flybacks
>>>>Robert
>>>>tvservice@xxxxxxxxxxxxx
>>>>H & H Electronics Inc
>>>>
>>>>----- Original Message -----
>>>>From: "Shaun" <satguy@xxxxxxxxxxxxx>
>>>>To: <techassist@xxxxxxxxxxxxx>
>>>>Sent: Wednesday, August 18, 2004 2:46 PM
>>>>Subject: [TechAssist] Re: Panasonic CT-32HC43G Wont turn on
>>>>
>>>>
>>>>
>>>>>Did you just replace it or did you ring the flyback?
>>>>>
>>>>>Shaun
>>>>>
>>>>>Advanced Electronics
>>>>>224 West Riverview Ave.
>>>>>Fort Morgan, CO 80701
>>>>>----- Original Message -----
>>>>>From: "tvservice" <tvservice@xxxxxxxxxxxxx>
>>>>>To: <techassist@xxxxxxxxxxxxx>
>>>>>Sent: Wednesday, August 18, 2004 1:35 PM
>>>>>Subject: [TechAssist] Re: Panasonic CT-32HC43G Wont turn on
>>>>>
>>>>>
>>>>>
>>>>>>Have seen several bad flybacks in that model causing that symptom
>>>>>>flyback T551 part number TXFFT03GSER
>>>>>>HTH
>>>>>>Robert
>>>>>>tvservice@xxxxxxxxxxxxx
>>>>>>H & H Electronics Inc
>>>>>>----- Original Message -----
>>>>>>From: "Shaun" <satguy@xxxxxxxxxxxxx>
>>>>>>To: "tech" <techassist@xxxxxxxxxxxxx>
>>>>>>Sent: Wednesday, August 18, 2004 11:05 AM
>>>>>>Subject: [TechAssist] Panasonic CT-32HC43G Wont turn on
>>>>>>
>>>>>>
>>>>>>
>>>>>>>This is a 2003 set that the customer said he only has had for a
>>>
>>>month
>>>
>>>>>and
>>>>>
>>>>>>>bought it as-is. It will try to turn on sounds like high-voltage
>>>
>>>tries
>>>
>>>>>>then
>>>>>>
>>>>>>>shuts down and the front panel light will start blinking very
>>
>>slowly
>>
>>>>>about
>>>>>
>>>>>>>4-5 times. I must unplug it to get it to do anything after each
>>>
>>>time.
>>>
>>>>>Has
>>>>>
>>>>>>>anyone seen one of these of have any tips, or have a manual?
>>>>>>>
>>>>>>>Shaun
>>>>>>>
>>>>>>>Advanced Electronics
>>>>>>>224 West Riverview Ave.
>>>>>>>Fort Morgan, CO 80701
>>>>>>>
>>>>>>>
>>>>>>
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