[TechAssist] Re: kv27fs12 shuts down after 9 sec.
- From: "KENNETH BARNES" <KENNYB928@xxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Sun, 17 Apr 2005 19:58:22 -0500
Damon: No blink codes; have +/-15 volt supply. Heater on CRT ok. Have 200V
supply. Try on a few times & get a horz line (vert prob?). When you turn it
on you cannot turn it off. Goes off by itself; and when the hi-voltage drops
to zero, the set draws 1.1 amps; the same as when the hi-voltage is 28 KV.
Doubt it is vertical. Changed vert IC and makes no difference - same results.
The fact I can't turn it off makes me think I have another problem. Ring yoke
both horz and vert ok. Can you shed any more light on this? TIA Kenny
----- Original Message -----
From: Damon<mailto:damon101@xxxxxxxxxxxxxx>
To: techassist@xxxxxxxxxxxxx<mailto:techassist@xxxxxxxxxxxxx>
Sent: Friday, April 15, 2005 11:31 PM
Subject: [TechAssist] Re: kv27fs12 shuts down after 9 sec.
Well first, check your vert output signal, and do you get any blink codes???
I think the +/- 15 V supply comes from the IHVT for the vert, so if you
don't have vert, check the resistors around the IHVT.
If this isn't the problem, only thing I can suggest next is to check heater
and 200V supplies to CRT, if they are there at the CRT, see if you can
repeatedly fire the TV up to warm up the CRT and turn up the screen to see
if that will help lead you in the right direction.
Damon Brunger
Telrad Electronics
Fort Wayne IN
----- Original Message -----
From: "KENNETH BARNES" <KENNYB928@xxxxxxx<mailto:KENNYB928@xxxxxxx>>
To: <techassist@xxxxxxxxxxxxx<mailto:techassist@xxxxxxxxxxxxx>>
Sent: Friday, April 15, 2005 10:15 AM
Subject: [TechAssist] kv27fs12 shuts down after 9 sec.
> Sony Model KV27FS12, shuts down. Original problem dead. Replaced
Q505,then set turned on by itself and hi voltage 29kv, shut down in 8 to 10
sec. Then took out Q505. Removed flyback, would not ring (bad). New
flyback installed. Hi voltage now 30 kv. Q505 runs cool. B+133 from
SWPS, other voltages from SWPS 12.64 and 14.1 Set still shuts down in about
8 to 10 sec. Also, before shut down, can't turn tv off manually
>
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> Kenny Barnes
> Kenny Barnes TV
> 928 S Marshall St.
> Boone, Iowa
> 50036
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