Noise, Interference, Lines In The Picture, Usually At Turn On; Atsc Reception Problems - Hitachi 46W500 Training

DP-3X THINGS YOUR SHOULD KNOW

(01) Noise, Interference, Lines in the Picture, usually at turn on.

When the set is first turned on, there may be lines in the picture. These line will be very small and faint.
Looks like interference. Usually you can hear a faint sizzle if the room is quite.
Remove the Anode leads from there wire ties. Then, take hold of the anode leads approximately 8
inches away from the CRT and slightly wiggle the cable while applying very slight pull and push pres-
sure.
If the problem quits, this is the CRT anode cup that will have the problem. The fix is to remove the an-
ode lead, clean the entire area of it's silicone. And replace the silicone and Anode lead.
Use the following kit which includes a tube of silicone and anode lead.
Part Number: H890411
(02) ATSC Reception problems: Important information to gather when encountering a customer
with ATSC reception problems. Please gather all information listed below before calling for
Technical Assistance.
1. Make sure we are dealing with Ant C only, please.
2. Model and serial number...By the way, we are placing ALL model and serial
numbers on the right hand side of the units.
3. Did the customer run auto programming? Please run auto programming again just in case.
4. Signal strength on this channel? Available through customer menu.
5. What kind of antenna are they using? Rabbit Ears? Roof antenna? Are they using antenna ro-
tor? Cable?
6. What is the Software version? This is available through the customer menu.
7. What channel is having the problem? Digital channels are a main channel and a sub channel,
always displayed as : 25-1 or 25-2 and 25-3, 25-4, etc,.
Please ask for all sub channels available, sometimes there are more than one or two.
8. Do they know it's respective channel on analog format (NTSC)? Is the analog channel coming
in ok? Just to give you an example:
San Diego channel 8 NTSC is equal to channel 25-1 ATSC, when you do auto programming,
you will see 8-1 on TV OSD, but you can also enter: 25-1 and you will also get to the same 8-1
digital channel. We all must be very familiar with this fact in order to see if we can select the
channel directly, without the need to do auto programming. See www.trasmitter.com for state
by state listing of analog/digital equivalency table, their location and their power.
9. What is the stream reception format? You will see: 480i, 480p, 720p or 1080i on the upper
section of the OSD when receiving.
10. What is the Channel content? Is this ABC, CBS, PBS? And station identification is needed, like
WYCN TV Channel 5 or whatever.
11. Try to contacted the Local Station? Explain the problem to the engineer. They may be able to
investigate and make some corrections. If you did speak to someone at the station, whom did
you talk to? Name and phone number or e-mail address?
12. Local stations are starting to provide a feedback for their customers mostly through a web
page....They always want to know if customer are receiving the Digital Channels and are al-
ways looking forward to get feedback.
13. Try PIP and make sure the PIP channel is also the same channel as the one they are trying to
receive with Ant C.
14. Describe problem and if possible, send a picture/drawing or a video.
15. Is sound OK?
16. Customer name and phone numbers, please.
Once this information is gathered, please contact Hitachi Technical support (see below) and provide all
information gathered.
Phone: 800-393-2369 (Authorized Servicers only)
Phone: 619-591-5352 (Non-Authorized Servicers only)
FAX: 619-482-8045
EMAIL: techsupport@hhea.hitachi.com
(See below for contact information).
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