[TechAssist] Re: RCA TV F27628-CTC203AA13
- From: "John H Smit" <jhsm@xxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Tue, 19 Oct 2004 10:17:00 -0600
Thank you Adolph
Yes I have resolderd all that in the horizontal also that little coil that
feeds the base of the Hot.
I took it out and cleaned the leads before I put it back in.
My horizontal drive waveform is normal and the picture looks very good no
flaw or horizontal pulling at all just perfect.
Only I found the high voltage way to low and maybe I have to take a oher
voltage checker in case my VA 62 shows a wrong reading,that is still
possible.
I use the 100X stepdown probe and it shows 215 V.
In stead of 26-28.
I also checked the caps in the collector circuit of the ho transistor and
they are fine,
I keep looking and have to find the cause
Thanks again
John Smit
----- Original Message -----
From: "Adolph Gower" <agower@xxxxxxxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Tuesday, October 19, 2004 2:56 AM
Subject: [TechAssist] Re: RCA TV F27628-CTC203AA13
>
> Resolder driver transformer!!!
> CTV ELECTRONICS RECYCLE & REPAIR
> CORDOVA TV
> 3415 Comet Court
> Sacramento, Ca. 95827-2924
> agower@accessbee,com
> agower@xxxxxxxxxxxxx
> Fax (916) 363-8359
> Phone (916) 698-6565
> Fax (916) 363-8359
> Phone (916) 698-6565
> agower@xxxxxxxxxxxxxxxxxx
> (916) 698-6565
> ----- Original Message -----
> From: "John H Smit" <jhsm@xxxxxxxxxx>
> To: <techassist@xxxxxxxxxxxxx>
> Sent: 2004Äê10ÔÂ18ÈÕ 13:28
> Subject: [TechAssist] RCA TV F27628-CTC203AA13
>
>
> : Hello to all.
> : I have this set and it will play for several days and it was taking
out
> : Q14302 a while ago and I replaces it again and checked all the
voltages
> in
> : the power supply and the horizontal circuit,and it all looks good then
> it
> : shorted Q14301 the horizontal driver and did it again after two weeks
> the
> : only difference I could see was the collector voltage on Q14301 it
shows
> 72
> : volt on the Sams and it measures 81 volt.
> :
> : I rang the flyback and it gives 71 rings on the VA62,and then when I
> read
> : the highvoltage it is only 21.0 Kv instead of 26.0-28.0 KV.
> : It never shorted out the horizontal out transistor which is unusual I
> think.
> : The drive waveform on the base of Q14401 shows a good waveform and
> amplitude
> : but on the collector the amplitude is lower then normal.
> : I ran out of idea's to find the problem so I turn to Techassist for
> help.
> : So please give me a break and give me the answer.
> : I appreciate any reply on this.
> : Thank you in advance
> : John H Smit
> : Smit's TV Service
> : Box10
> : Gunnison Utah 84634
> : 800-355-4948 Fax&Phone
> : 435-528-7955 Fax&Phone
> : jhsm@xxxxxxxxxx
> :
> :
> :
>
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