[TechAssist] Re: RCA F35755MB CTC179DK need INFO on micro kit

I have the data file for a factory fresh 212119 eeprom. If you have an 
eeprom programmer, I can send you the file.




Gary McCartney

McCartney Electronics
Guelph Ontario Canada
Est. 1984
email: gary (at) number63.ca







al m wrote:
> Ok I'll try it. The reason I think it's the EPROM is that the micro keep 
> searching on turn-on. The data keeps flowing. I guess it could be the jungle 
> IC or the tuner but the tuner I figured caused this problem because 
> resoldering tuner let's the set turn on.
> Al Marquardt
> ampm@xxxxxxx
> Al Marquardt Electronic Repair
> 206 W Main
> Girardville Pa. 17935
> ----- Original Message ----- 
> From: "Jim Myers" <jr.myers@xxxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Monday, December 20, 2004 2:13 PM
> Subject: [TechAssist] Re: RCA F35755MB CTC179DK need INFO on micro kit
> 
> 
> 
>>Your micro, -97E came before -97H so it is supposed to be replaced but
>>that is just because of the error code problem. Does it really matter if
>>it stores error codes? I would think the EEPROM  could be replaced
>>without replacing the micro if that is causing your problem. The Parts
>>Finder program list the 229778 P/N for both U3101 and U3102 and is
>>called a KIT so I thought that meant it included both the EEPROM and the
>>Micro.
>>*******************************************************************************************************************
>>Since 1972
>>Jim Myers
>>Telrad Electronics
>>Fort Wayne, Indiana
>>
>>al m wrote:
>>
>>>Thanks Jim but the kit only contains the EPROM is that all you need now?
>>>Al Marquardt
>>>ampm@xxxxxxx
>>>Al Marquardt Electronic Repair
>>>206 W Main
>>>Girardville Pa. 17935
>>>----- Original Message ----- 
>>>From: "Jim Myers" <jr.myers@xxxxxxxxxxx>
>>>To: <techassist@xxxxxxxxxxxxx>
>>>Sent: Monday, December 20, 2004 11:15 AM
>>>Subject: [TechAssist] Re: RCA F35755MB CTC179DK need INFO on micro kit
>>>
>>>
>>>
>>>
>>>>Here's da poop: (The kit you need, 229782, is superseded by 229778)
>>>>
>>>>Symptom: A failure of an I2C bus device will prevent the TV from turning
>>>>on. If a device has failed, its address
>>>>is supposed to be stored in an error code area of the EEPROM, and
>>>>displayed when the service
>>>>mode is entered. On some early production sets, the error codes will not
>>>>be stored.
>>>>Cause: An error in the microprocessor code prevents the set from coming
>>>>on in the service mode to
>>>>display the error code. A bit in the EEPROM is set to prevent the
>>>>microprocessor from checking for
>>>>the error code.
>>>>Cure: Replace both the microprocessor and EEPROM. For the CTC178 and
>>>>CTC179 chassis, the
>>>>microprocessor with the error is marked -97H or before. The
>>>>microprocessor with the corrected code
>>>>is marked -97I or later. For the CTC188 and CTC189 chassis, the
>>>>microprocessor with the error is
>>>>marked -98C or before and the microprocessor with the corrected code is
>>>>marked -98D or later. Both
>>>>the microprocessor and EEPROM must be replaced. The microprocessor and
>>>>EEPROM come
>>>>packaged together as a kit. Refer to the following table for the chassis
>>>>to kit stock number cross
>>>>reference.
>>>>CTC178J, L 229782
>>>>CTC179BJ, CJ, DJ 229780
>>>>CTC179CK, CM, DK, DL 229782
>>>>CTC188A 230055
>>>>CTC189DA, DB 230055
>>>>NOTE: To prevent having to align the chassis after replacing the EEPROM,
>>>>record the values stored in the
>>>>original part and use those values for the new part. If this is not
>>>>done, the complete chassis and
>>>>tuner alignments must be performed.
>>>>
>>>>
>>>>
>>>>*******************************************************************************************************************
>>>>Since 1972
>>>>Jim Myers
>>>>Telrad Electronics
>>>>Fort Wayne, Indiana
>>>>
>>>>al m wrote:
>>>>
>>>>
>>>>>Does this set have to have the micro and the EPROM replaced together or
>>>>>can
>>>>>I just put in the EPROM. Set came in shutting down, then went to 3 tries
>>>>>and
>>>>>then shutdown, bending the board turned it on. Resoldering the tuner
>>>>>fixed
>>>>>the intermittent turn on but now it's stuck in video mode and the menu
>>>>>won't
>>>>>come up. I see Tritronics has a kit but it's NLA. Can I get by with just
>>>>>the
>>>>>EPROM? This set has a EPROM marked 97E which from tips I have says you
>>>>>must
>>>>>replace the two together. If so does anyone have a used micro and EPROM
>>>>>for
>>>>>the DK chassis? Thanks.
>>>>>Al Marquardt
>>>>>ampm@xxxxxxx
>>>>>Al Marquardt Electronic Repair
>>>>>206 W Main
>>>>>Girardville Pa. 17935
>>>>>
>>>>>
>>>>>
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>>>
>>>
>>>
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