[TechAssist] fix Update#2! RCA 61" hdtv P61310, DTV307GA, fans"kick" once, otherwise dead]

  • From: Phil Bader <tjanphyl@xxxxxxxxxxxxxxx>
  • To: techassist@xxxxxxxxxxxxx
  • Date: Wed, 26 May 2004 10:23:35 -0400

Did the 4700 mfd caps on the DM PS,etc as described

PS: another tech  advised on the DMA power supply (upright one above
sweep) to just change caps C14113,C14115 (use# 250729), and diodes
CR19710 and 13 with #234048. High failure rates, tho not my problem

 as an upgrade, replaced blue tube, the foil  SVM coil on the neck, the 
yoke (I got one!). Did the mechanical focus,electrical focus,etc.Entered 
the service menu (with TV on, simultaneously press and hold TV/DIRECTTV 
ans Channel Down buttons on front of set).Got into the digital 
convergence.It works like the CTC195's. Sweet. Sharp. Looks good now. A 
lot of work and research in this one. I printed out the alignment 
section of my DTV307 disk and bound it in a folder for future use.
Thanks, all for all the assistance. Couldn't have done it without our 
fine group.
Phil Bader

Phil Bader wrote:

>Thanks for the feedback, always appreciated from this forum.
>, but what the h*ll with "NLA" on a yoke in a  three thousand dollar 
>unit 36 months out of the plant? Customer hasn't had it 36 months! Geez, 
>this is the TOP end  of RCA,s CRT  based HDTV. What the heck does RCA 
>think? I got a email confirmation on my web order and although it showed 
>one in stock, now says zero stokk, one "BO".
>I dunno. This govt is ALLOWING these thugs to get away with this. All 
>nice and legal.
>Venting...
>Phil Bader
>
>Wayne Vanaman wrote:
>
>  
>
>>The "square tape" is the SVM coil. 240796.  I have moved many of these coils
>>    
>>
>>from tube to tube.  Just examine carefully its position on the neck.
>  
>
>>RCA tech assist once told me, on a warranty job, to cut and splice the yoke
>>wires instead of changing all three yokes.
>>
>>Wayne Vanaman
>>Omega Electronics
>>6904 W Fairfield Dr
>>Pensacola, Fl.  32506-3310
>>
>>Wayne@xxxxxxxxxxxxxxxxxxxxx
>>WWW.PensacolaTVRepair.Com
>>
>>850-456-5995 voice
>>850-458-6369 fax
>>
>>
>>----- Original Message ----- 
>>From: "Phil Bader" <tjanphyl@xxxxxxxxxxxxxxx>
>>To: <techassist@xxxxxxxxxxxxx>
>>Sent: Saturday, May 22, 2004 8:41 AM
>>Subject: [TechAssist] Update#2! RCA 61" hdtv P61310, DTV307GA, fans "kick"
>>once, otherwise dead]
>>
>>
>> 
>>
>>    
>>
>>>An ongoing saga...
>>>The unit did power on with the blue CRT ioslated from the set.
>>>Customer approved the estimate., I ordered the parts. INstalled the CRT.
>>>Upon removing the blue yoke, I saw the insides were cut to ribbons by
>>>the broken glass of the  neck.Funny this still allowed the set to power
>>>on with this yoke plugged in, but maybe it was damaged  "open" instead
>>>of shorted. Anyway, the yoke is a  248399, Tritronics shows it NLA (a
>>>three year old 61in. HDTV), but another distrib. showed one left.
>>>Supposedly it comes as three yokes attached together. (daisey chained).
>>>I assume I may be able to buy the three and install the one,as the other
>>>two tubes operate OK.
>>>Also, there is an interesting clear square tape with a copper coil
>>>printrd in it that must be peeled off the old CRT neck and placed on the
>>>new, and a wire soldered to it.
>>>What a pia.
>>>Ordered the yoke on line this morning. Any input appreciated.
>>>Phil Bader
>>>
>>>Phil Bader wrote:
>>>
>>>   
>>>
>>>      
>>>
>>>>After removing anode from bad blue CRT and unplugging CRT neck board,
>>>>the set powered up with a good picture except of course no blue.
>>>>Verified no other damage.
>>>>I  am still thinking the CRT neck board on the bad tube may have taken
>>>>damage, but not many parts on that assy, and seems easy enough to fix if
>>>>needed.
>>>>Awaiting customer's return call.
>>>>My fix will be a blue CRT assembly (comes without yoke), the two diodes
>>>>and two 4700mfd caps said to be a problem on the DMA power supply board,
>>>>as recommended in thread below.
>>>>(plus the convergence-from-hell, probably)
>>>>Will advise.
>>>>Phil Bader
>>>>
>>>>tvservice wrote:
>>>>
>>>>
>>>>
>>>>     
>>>>
>>>>        
>>>>
>>>>>You can do just what you said
>>>>>look for coolant leak at broken tube
>>>>>possible cause of break
>>>>>Robert
>>>>>tvservice@xxxxxxxxxxxxx
>>>>>H & H Electronics Inc
>>>>>
>>>>>----- Original Message ----- 
>>>>>From: "Phil Bader" <tjanphyl@xxxxxxxxxxxxxxx>
>>>>>To: <techassist@xxxxxxxxxxxxx>
>>>>>Sent: Tuesday, May 18, 2004 8:44 AM
>>>>>Subject: [TechAssist] update. RCA 61" hdtv P61310, DTV307GA, fans "kick"
>>>>>once, otherwise dead]
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>       
>>>>>
>>>>>          
>>>>>
>>>>>>-------- Original Message --------
>>>>>>Subject: RCA 61" hdtv P61310, DTV307GA, fans "kick" once, otherwise
>>>>>>         
>>>>>>
>>>>>>            
>>>>>>
>>dead
>> 
>>
>>    
>>
>>>>>>Date: Sat, 15 May 2004 11:06:13 -0400
>>>>>>From: Phil Bader <tjanphyl@xxxxxxxxxxxxxxx>
>>>>>>To: techassist@xxxxxxxxxxxxx <techassist@xxxxxxxxxxxxx>
>>>>>>
>>>>>>I checked the DMA Power supply board and the two 4700mfd caps .Caps
>>>>>>tested OK. I noticed as I powered it on, looking inside in the back, as
>>>>>>it would do the cycling, I saw an arc from up under the CRT area each
>>>>>>cycle.
>>>>>>opened the front panel where I could see the bottoms of the CRT necks
>>>>>>and CRT boards.
>>>>>>The CRT on my right had the neck hanging!
>>>>>>I can see a black arc line around it at the bell where it appears to
>>>>>>have arced until it burnt through the glass neck!. CRT is toast. Don't
>>>>>>know what else.
>>>>>>Question:
>>>>>>Can I isolate this bad blue CRT by unplugging it's anode from the
>>>>>>         
>>>>>>
>>>>>>            
>>>>>>
>>block,
>> 
>>
>>    
>>
>>>>>>and unplug the CRT board, so I can power the set and see if the other
>>>>>>two CRTs are OK, and I have HV,etc? What's the safest way?
>>>>>>
>>>>>>Will keep posted.
>>>>>>
>>>>>>         
>>>>>>
>>>>>>            
>>>>>>
>>here.
>> 
>>
>>    
>>
>>>>>>Phil Bader
>>>>>>
>>>>>>Philip Bader
>>>>>>Jan Phyl TV Inc. (estab. 1976)
>>>>>>3420 Recker Hwy. Winter Haven, Fl. 33880
>>>>>>
>>>>>>
>>>>>>
>>>>>>Phil Bader wrote:
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>         
>>>>>>
>>>>>>            
>>>>>>
>>>>>>>A newer chassis.
>>>>>>>RCA  61 inch  HDTV. model P61310, chassis DTV307GA.
>>>>>>>No picture, no sound.
>>>>>>>I notice there is an "access card" in a slot in the rear, I assume a
>>>>>>>built in satelite tuner assy.
>>>>>>>Customer is an office equipement tech, and says it has two 24 volt
>>>>>>>fans that seem to "kick" once, but do not start up. The set is
>>>>>>>otherwise dead.
>>>>>>>When I plugged in the cord, I heard the "chirp" of what I assume is
>>>>>>>the power supply.
>>>>>>>Pushed power button: Green light comes on and stays green constantly.
>>>>>>>No other response, other than a strange sound coming from the lower
>>>>>>>right side of the set (facing the set's screen), best described as a
>>>>>>>half-second "Gurgle" recurring steadily every one second.
>>>>>>>Could use ANYTHING on this: pdf's, bullitens, histories, common
>>>>>>>hi-failures, anything!
>>>>>>>Thanks,
>>>>>>>Phil Bader.
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>           
>>>>>>>
>>>>>>>              
>>>>>>>
>>>>>>-- 
>>>>>>
>>>>>>Philip Bader
>>>>>>Jan Phyl TV Inc. (estab. 1976)
>>>>>>3420 Recker Hwy. Winter Haven, Fl. 33880
>>>>>>Fax (863) 299-8821
>>>>>>email: tjanphyl@xxxxxxxxxxxxxxx
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>         
>>>>>>
>>>>>>            
>>>>>>
>>>>>-------------------------------------------------------------------------
>>>>>       
>>>>>
>>>>>          
>>>>>
>>-
>> 
>>
>>    
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>>>>>>         
>>>>>>
>>>>>>            
>>>>>>
>>>>>---
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>       
>>>>>
>>>>>          
>>>>>
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>>>>>>
>>>>>>
>>>>>>
>>>>>>         
>>>>>>
>>>>>>            
>>>>>>
>>>>--------------------------------------------------------------------------
>>>>     
>>>>
>>>>        
>>>>
>>---
>> 
>>
>>    
>>
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>>>>>
>>>>>
>>>>>
>>>>>       
>>>>>
>>>>>          
>>>>>
>>>>     
>>>>
>>>>        
>>>>
>>>-- 
>>>
>>>Philip Bader
>>>Jan Phyl TV Inc. (estab. 1976)
>>>3420 Recker Hwy. Winter Haven, Fl. 33880
>>>Fax (863) 299-8821
>>>email: tjanphyl@xxxxxxxxxxxxxxx
>>>
>>>
>>>
>>>--------------------------------------------------------------------------
>>>   
>>>
>>>      
>>>
>>---
>> 
>>
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>>
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>
>  
>

-- 

Philip Bader
Jan Phyl TV Inc. (estab. 1976)
3420 Recker Hwy. Winter Haven, Fl. 33880
Fax (863) 299-8821
email: tjanphyl@xxxxxxxxxxxxxxx



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