[TechAssist] Re: Panasonic CT-27S16CS (Chassis YAMEDP224C) HOT Part number?
- From: "Hoyt's TV" <hoytstv@xxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Fri, 17 Jun 2005 14:55:10 -0400
I think they tell you that because most scopes/probes can't handle it.
Used to be the rule before Sencore came out with probes that could do it
about 30 years ago.
Russ Hoyt
Hoyt's TV
Exeter, NH
----- Original Message -----
From: "Bruce Tiedeman" <btied@xxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Friday, June 17, 2005 12:27 PM
Subject: [TechAssist] Re: Panasonic CT-27S16CS (Chassis YAMEDP224C) HOT Part
number?
>I just checked the tube seems O.K. I do notice the H.O.T waveform "trailing
> edge of the at the bottom", is not square like most, it jogs up slightly.
> It may not be turning off properly. The print says, do not check the H.O.T
> collector waveform so the scope probe may be causing this condition. I am
> using a D1881 now it is getting a little hot, will let it run and see, may
> have to order original.
> this customer is impatient ,
> thanks for your help,
> Bruce.
>
>
> ----- Original Message -----
> From: "Webster's TV" <webstertv@xxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: Friday, June 17, 2005 11:12 AM
> Subject: [TechAssist] Re: Panasonic CT-27S16CS (Chassis YAMEDP224C) HOT
> Part
> number?
>
>
>> Bruce,
>>
>> The original part # for the H. O. T. is # BU2508DF, one thing that can
>> cause failure of the H.O.T. besides the usual poor solder conections on
>> the
>> driver transformer, is a heater to cathode short in the Picture Tube, the
>> tube will short intermittantly, turning bright blue, red, or
>> green,depending
>> on the short, the customer will leave the set on and in no time it draws
>> enough current to blow the H.O.T. Usually tapping the neck of the tube
>> when
>> its playing OK will cause flashes of color of the shorted cathode. This
>> may
>> not be your problem, but I've had this problem several times in the past
>> on
>> these Quasar/Panasonic sets.
>>
>> HTH
>>
>> Dan Webster
>> Webster's TV
>> Shullsburg, Wi.
>> ----- Original Message -----
>> From: "Bruce Tiedeman" <btied@xxxxxxxxxxxx>
>> To: <techassist@xxxxxxxxxxxxx>
>> Sent: Friday, June 17, 2005 8:18 AM
>> Subject: [TechAssist] Panasonic CT-27S16CS (Chassis YAMEDP224C) HOT Part
>> number?
>>
>>
>>> Panasonic CT-27S16CS HOT Part number needed!
>>>
>>> I am hoping some one has information on this chassis. I repaired this
>>> set
>> a
>>> short while ago replacing the shorted H.O.T with a similar one and it
>>> came
>>> back same problem." H.O.T shorted fuse OK". The H.O.T that was in this
>>> set
>>> was a C4927 and I now realize it is similar to some Sony sets. I am not
>> sure
>>> if this is correct. This T.V set was in another shop and the same
>> transistor
>>> was replace previous.
>>> I soldered the Horiz section as usual and went over it again. If some
>>> one
>>> could confirm this part would appreciate it
>>>
>>> thanks
>>> Bruce.
>>>
>>> B&T Electronics
>>> 139 Margaret St
>>> Sarnia Ontario
>>> Canada
>>> N7T 2Y3
>>> 519 344 1850 .
>>>
>>>
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>
>
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