[TechAssist] Re: RCA P46729ba, ch.#ptk169ca, arcing anode to bracket ( fixed )
- From: Carol Rundle <brundle@xxxxxxxxxxxxx>
- To: techassist@xxxxxxxxxxxxx
- Date: Wed, 6 Jul 2005 00:32:26 -0700 (PDT)
Rechecked CRT's red , green,guns OK, Blue emission life test Bad, gave
blue gun a shot with my sencore restorer, with blue back, I could see pulsating
blue ,sort of like a shorted crt.
In my haste to get it finished, I was too careful with anode lead to HV
splitter, was not all the
way seated, causing the blue problem!
Bill
Bill's TV
Sonora, Calif.
carol Rundle <brundle@xxxxxxxxxxxxx> wrote:
Charles, Did the tape over the anode cavity,cleaned, siliconed, let it cure
0ver nite. tried it
so far no arcing! Unfortunately, TV has other problems, green&red look o.k.,
blue barely visable right side of faces! All three crt's check o.k. Emmision,
tracking , no shorts.. If anyone has any tips, appreciate the help, thank
you... Leaving for Montery friday to get in some scuba diving, fresh start
tuesday... To everyone a Safe Weekend .
Bill
Bill's TV
Sonora, Cal.
repair11 wrote:
That is probably not coolant, the rubber decomposes, I scrape silicone
sealant with a razor blade(put tape over anode cavity to keep silicone out),
clean with acetone.I use the anode cup from an RCA fly kit where I did not
use the lead. The RCA cup fits perfectly. Also check the shield around
anode cup, usually has a hole burned in it, hth.
Charles Betzler
Best Electronics
repair11@xxxxxxx
----- Original Message -----
From: "Carol Rundle"
To:
Sent: Wednesday, June 29, 2005 7:27 PM
Subject: [TechAssist] RCA P46729ba, ch.#ptk169ca, arcing anode to bracket
> Customer said it shut down, only click at power on. Replaced shorted
H.O.xistor, c4402, horiz. dr. cap., checked and replaced 2.2, 15, 39, 470
cap's in chopper/ Reg. circuit. Looked for coolant leaks, none visible.
Checked all standby voltages , all, right on...
> At power on, Arcing at Blue anode cup, with in seconds blue came on.
Removed crt found pin hole in anode cup and few drops of coolant.
Question?, best method of cleaning & sealing? i'm using 40k hv lead off a
Mits. 35". Repaired my share of 169 chassis', a few with anode
problem's... Any tips appreciated. Thank you.
>
> Bill
> Bill's TV
> Sonora,Cal.
>
>
> Carol Rundle
> brundle@xxxxxxxxxxxxx
>
>
>
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Carol Rundle
brundle@xxxxxxxxxxxxx
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