[TechAssist] Re: RCA TV TX826TB, need schematic and waveform diagrams
- From: Al L <alleathe@xxxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Thu, 12 Feb 2004 10:41:14 -0500
Gary,
My scanner is down,but I can fax it.Send me your phone number!What
sections do you need most,sweep and power supply?
If you have free minutes,call me and I'll read Wins tips for you, al
Al Leatherman
224 RT. 46
Mine Hill, NJ 07803
973-361-5796
WWW.ALS-TV.NET
----- Original Message -----
From: "Gary McCartney" <gary@xxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Thursday, February 12, 2004 9:40 AM
Subject: [TechAssist] RCA TV TX826TB, need schematic and waveform diagrams
> I have 2 of these sets. The one I replaced the HOT with a S2000AF
> because that was the number of the original removed, plus CP08, CP68,
> DP02 and TP15 (used a 2SD1138 with leads bent to fit- I didn't have RCA
> original or ECG31 in stock), also soldered around the board. Fired set
> up on variac at 95Vac and it comes on but pulses really fast, like about
> 4 times a second. Is my TP15 the problem or do I have to fire it up at
> 120V, or do I still have a component problem? I haven't worked on this
> chassis type before.
>
> The other set I replaced the same components plus RP28 (2.7, 5W) and I
> used a 2SD1886 for the HOT (specs match the original S2000N removed) and
> again, a 2SD1138 for TP15. This set fires up at 95Vac and runs steady
> but the HOT waveform has an extra step in it on the falling edge of the
> pulse, about half way down which doesn't look normal compared to most
> HOT waveforms in other chassis. Is this normal for the TX826? If so I'll
> test run it to see if TP15 and the HOT hold up. So far I've only left
> the set on for about 10 seconds.
>
> Yes I know there are techs who will say "just forget about these." Well,
> I've been thinking of giving up on the whole shop.
>
> THanks for any help.
> --
>
>
>
>
> Gary McCartney
>
> McCartney Electronics
> Guelph Ontario Canada
> Est. 1984
> email: gary (at) number63.ca
>
>
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