[TechAssist] Re: Panasonic CT-27S16CS (Chassis YAMEDP224C) HOT Part number?
- From: "Bruce Tiedeman" <btied@xxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Fri, 17 Jun 2005 12:27:41 -0400
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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