[TechAssist] Re: Hitachi 31 in. TV 31KX6B shuts off after about 30 min.
- From: "Glenn Larkman" <mail@xxxxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Thu, 29 May 2003 11:39:04 -0700
Phil,
You didnt say if set was going to HV shutdown or just turning off.
Do you have to cycle the power switch to reset the shutdown latch?
What happens when you run the set with the CRT board off the tube??Any
leakage???
I hope you dont have the same problem I have with a similar set in my shop
right now but mine has your symptoms and the problem is the tube.
I can rap the tube neck lightly and throw the set into shutdown. Isolating
the heaters has no effect.
Customer is a little bummed out right now.....
Glenn Larkman
Audiotech
256 Nth Hwy 101
ENCINITAS CA 92024
760 944 9048
FAX 944 0345
mail to"mail@xxxxxxxxxxxxx"
"www.audiotech.net"
----- Original Message -----
From: "Philip Bader" <tjanphyl@xxxxxxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Thursday, May 29, 2003 10:43 AM
Subject: [TechAssist] Hitachi 31 in. TV 31KX6B shuts off after about 30 min.
Customer said it shut off in 15 min.
I researched the chassis and replaced the two caps in the SMPS area,
C733 and C612 both 220mfd@ 6.3V.They are supposed to cause shut down
issues. I also resoldered throughout the chassis of any suspicious
solder. I then noticed a slight tic-tic-tic sound from the front area
when powered on. I could see a slight static arc from the front speaker
frame over to the front black metal grille.The grill was "floating"
ungrounded and static built up being under the CRT frame.I connected a
small wire from the grille inside the set over to chassis frame and
seems to bleed off the static OK.
Well, all for naught! After 30-45 minutes it just shut off. Push power,
turns on again with good pix. Then shuts off again sooner. Tap chassis,
doesn't seem a lose connection.
Need input!!!
Phil Bader
--
Philip Bader
Jan Phyl TV Inc. (estab. 1976)
3420 Recker Hwy. Winter Haven, Fl. 33880
Fax (863) 299-8821
email: tjanphyl@xxxxxxxxxxxxxxx
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