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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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#1
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RCA P56927 Chassis PTK195M1P Flyback 239111 related parts
IIRC this FBT comes from RCA with a new resistor (R14704) and capacitor
(C14710) with notes that they must be replaced or there may be reliability problems with the transformer. Is this one of the sets that required this? I can't find the SB in my records. Are the replacements the same values or changed? I had a customer with one of these on order, and as those of you who service RCA likely know, there are none to be had and the backorder will go at least well into August. The customer had a buddy in another city in the repari business who said he could get it through Sears, which he did. The replacement came and it was an obvious generic (for which he paid $60) and had no related parts. I made clear that I would not warranty the repair but he wanted me to install it anyway. We found that C14710 was off value by about 20% (low) and replaced it with the original value. The transformer runs rather hot and the focus controls have to be set near one limit to get good focus. I suspect this is simply a lousy replacement, which is why I rarely use replacement flybacks, but want to make sure that the values on the two parts mentioned don't need to be changed. Thanks, Leonard |
#2
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RCA P56927 Chassis PTK195M1P Flyback 239111 related parts
Have encountered very poor quality replacement generic LOPT for RCA,
probably wait for original component & replace the other items supplied with the new LOPT. Impatience among customers tend to cause us to consider cheaper, quicker ways out. Thus producing a customer that may have other failures and cause you callbacks. Other thing I would check on the 195 chassis are the high voltage blocks, seen too many of them flop out and cause the unit to shut down. IMHO when changing the LOPT I normally change the block. "Leonard G. Caillouet" wrote in message . .. IIRC this FBT comes from RCA with a new resistor (R14704) and capacitor (C14710) with notes that they must be replaced or there may be reliability problems with the transformer. Is this one of the sets that required this? I can't find the SB in my records. Are the replacements the same values or changed? I had a customer with one of these on order, and as those of you who service RCA likely know, there are none to be had and the backorder will go at least well into August. The customer had a buddy in another city in the repari business who said he could get it through Sears, which he did. The replacement came and it was an obvious generic (for which he paid $60) and had no related parts. I made clear that I would not warranty the repair but he wanted me to install it anyway. We found that C14710 was off value by about 20% (low) and replaced it with the original value. The transformer runs rather hot and the focus controls have to be set near one limit to get good focus. I suspect this is simply a lousy replacement, which is why I rarely use replacement flybacks, but want to make sure that the values on the two parts mentioned don't need to be changed. Thanks, Leonard |
#3
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RCA P56927 Chassis PTK195M1P Flyback 239111 related parts
So is the 195 flyback the one that comes with the replacement resistor and
cap? How do you test the HV block? If the HV is stable and it is not leaking or getting hot, why would you replace it? Its just a splitter and doesn't even have an output for HV monitoring. I agree, generally, that replacement flybacks are typically not a good idea, and this one (from Sears as their replacement for the RCA) is a good example, but I have had good results with the replacements from Acme and the HR parts. I would only use them when the original is not available or the price is excessive, and I always make it clear with the customer beforehand that there may be issues. Leonard "Art" wrote in message ... Have encountered very poor quality replacement generic LOPT for RCA, probably wait for original component & replace the other items supplied with the new LOPT. Impatience among customers tend to cause us to consider cheaper, quicker ways out. Thus producing a customer that may have other failures and cause you callbacks. Other thing I would check on the 195 chassis are the high voltage blocks, seen too many of them flop out and cause the unit to shut down. IMHO when changing the LOPT I normally change the block. "Leonard G. Caillouet" wrote in message . .. IIRC this FBT comes from RCA with a new resistor (R14704) and capacitor (C14710) with notes that they must be replaced or there may be reliability problems with the transformer. Is this one of the sets that required this? I can't find the SB in my records. Are the replacements the same values or changed? I had a customer with one of these on order, and as those of you who service RCA likely know, there are none to be had and the backorder will go at least well into August. The customer had a buddy in another city in the repari business who said he could get it through Sears, which he did. The replacement came and it was an obvious generic (for which he paid $60) and had no related parts. I made clear that I would not warranty the repair but he wanted me to install it anyway. We found that C14710 was off value by about 20% (low) and replaced it with the original value. The transformer runs rather hot and the focus controls have to be set near one limit to get good focus. I suspect this is simply a lousy replacement, which is why I rarely use replacement flybacks, but want to make sure that the values on the two parts mentioned don't need to be changed. Thanks, Leonard |
#4
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RCA P56927 Chassis PTK195M1P Flyback 239111 related parts
Just a question or two here..
Why would anybody use a Generic 239111 when the RCA price is so cheap ? I just opened 6 RCA 239111,s that came in and none have those update parts. The last time I saw that those parts were to be changed was with useing 237506,s Has something changed that I am unaware of. kip |
#5
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RCA P56927 Chassis PTK195M1P Flyback 239111 related parts
Subject: RCA P56927 Chassis PTK195M1P Flyback 239111 related parts
I checked for bulletins, and there aren't any for either the DV or PTV. But FYI, the capacitor is a .01 @1KV, and the resistor is an 82K @ .5 watt carbon. If the cap is a blue poly one, it's probably OK. The yellow ones are suspect. |
#6
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RCA P56927 Chassis PTK195M1P Flyback 239111 related parts
Hey Leo: with all the information from the these other decitated technicians
maye you could procede to actually repair your 195 chassis now?? I have seen the blue poly caps swell when they become defective, maybe this will assist or not. BTW, Leo: Decitated technicians do not always designate specific components when instructed by manufacturers to replace a pcb, etc. AND All customers are not always right, agreed?? "John Del" wrote in message ... Subject: RCA P56927 Chassis PTK195M1P Flyback 239111 related parts I checked for bulletins, and there aren't any for either the DV or PTV. But FYI, the capacitor is a .01 @1KV, and the resistor is an 82K @ .5 watt carbon. If the cap is a blue poly one, it's probably OK. The yellow ones are suspect. |
#7
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RCA P56927 Chassis PTK195M1P Flyback 239111 related parts
In the original post I explained that these are on backorder and most
suppliers are saying they will arrive sometime in August. I had a customer who did not want to wait and had a friend who was a servicer in another city who gave him the Sears part number. Sears said they had it and he bought it from them, spending about $60. He insisted that I put it in even after I explained that I would not warranty the repair and the dangers involved. As it turns out, Tritronics got 200 of them today. The flyback does not come with the replacement resistor an capacitor as some RCA flybacks do, which is what my question was. Ronnie at Tritronics was very helpful in actually pulling a box and checking. The generic transformer runs hot and the focus has to be adjusted off to near the limit of the controls. So much for the quality of Sears replacement parts. Leonard ----- Original Message ----- From: "john" Newsgroups: sci.electronics.repair Sent: Tuesday, August 03, 2004 11:38 AM Subject: RCA P56927 Chassis PTK195M1P Flyback 239111 related parts Just a question or two here.. Why would anybody use a Generic 239111 when the RCA price is so cheap ? I just opened 6 RCA 239111,s that came in and none have those update parts. The last time I saw that those parts were to be changed was with useing 237506,s Has something changed that I am unaware of. kip |
#8
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RCA P56927 Chassis PTK195M1P Flyback 239111 related parts
Art,
you might pay better attention to what is written. The set has been fixed since last week. The question was about specific parts related to the FBT and whether there was a SB that I was missing. Leonard "Art" wrote in message ... Hey Leo: with all the information from the these other decitated technicians maye you could procede to actually repair your 195 chassis now?? I have seen the blue poly caps swell when they become defective, maybe this will assist or not. BTW, Leo: Decitated technicians do not always designate specific components when instructed by manufacturers to replace a pcb, etc. AND All customers are not always right, agreed?? "John Del" wrote in message ... Subject: RCA P56927 Chassis PTK195M1P Flyback 239111 related parts I checked for bulletins, and there aren't any for either the DV or PTV. But FYI, the capacitor is a .01 @1KV, and the resistor is an 82K @ .5 watt carbon. If the cap is a blue poly one, it's probably OK. The yellow ones are suspect. |
#9
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RCA P56927 Chassis PTK195M1P Flyback 239111 related parts
& your complaints regarding the after market LOPT, and one ended focus
adjustment?? All Last Week Eh: LOL "Leonard G. Caillouet" wrote in message ... Art, you might pay better attention to what is written. The set has been fixed since last week. The question was about specific parts related to the FBT and whether there was a SB that I was missing. Leonard "Art" wrote in message ... Hey Leo: with all the information from the these other decitated technicians maye you could procede to actually repair your 195 chassis now?? I have seen the blue poly caps swell when they become defective, maybe this will assist or not. BTW, Leo: Decitated technicians do not always designate specific components when instructed by manufacturers to replace a pcb, etc. AND All customers are not always right, agreed?? "John Del" wrote in message ... Subject: RCA P56927 Chassis PTK195M1P Flyback 239111 related parts I checked for bulletins, and there aren't any for either the DV or PTV. But FYI, the capacitor is a .01 @1KV, and the resistor is an 82K @ .5 watt carbon. If the cap is a blue poly one, it's probably OK. The yellow ones are suspect. |
#10
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RCA P56927 Chassis PTK195M1P Flyback 239111 related parts
Art,
Read the posts. The customer wanted it fixed in spite of my protests and warnings. My opinion has not changed. Pay attention to the entire discussion and the context. It was very clear. Leonard "Art" wrote in message ... & your complaints regarding the after market LOPT, and one ended focus adjustment?? All Last Week Eh: LOL "Leonard G. Caillouet" wrote in message ... Art, you might pay better attention to what is written. The set has been fixed since last week. The question was about specific parts related to the FBT and whether there was a SB that I was missing. Leonard "Art" wrote in message ... Hey Leo: with all the information from the these other decitated technicians maye you could procede to actually repair your 195 chassis now?? I have seen the blue poly caps swell when they become defective, maybe this will assist or not. BTW, Leo: Decitated technicians do not always designate specific components when instructed by manufacturers to replace a pcb, etc. AND All customers are not always right, agreed?? "John Del" wrote in message ... Subject: RCA P56927 Chassis PTK195M1P Flyback 239111 related parts I checked for bulletins, and there aren't any for either the DV or PTV. But FYI, the capacitor is a .01 @1KV, and the resistor is an 82K @ ..5 watt carbon. If the cap is a blue poly one, it's probably OK. The yellow ones are suspect. |
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