[TechAssist] Re: GE TV 27GT613-CTC177BH2 No vertical hold
- From: "John Mielke" <maintv2004@xxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Tue, 7 Jun 2005 14:37:16 -0600
I think your problem is the eeprom, or rather the data stored in it. If you
can get into the service menu, change the vertical height parameter to any
value below 31, the normal setting would be about 18. If you disconect the
antenna you may be able to see the service menu numbers.
If you have an eeprom programer, check address 10-A, the first digit should
be 0 or 1 and the average should be 09. Or of course you can replace the
eeprom but you may then need to setup the tuner parameters. Any time the
vertical height parameter is above 32 you will have no vertical sync. HTH,
John.
John Mielke
Main TV
636 Main St
Longmont, Co 80501
303 776 6955
303 776 0792 fax
www.longmontmaintv.com
maintv2004@xxxxxxxxxxx
----- Original Message -----
From: "John H Smit" <jsm@xxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Tuesday, June 07, 2005 10:06 AM
Subject: [TechAssist] GE TV 27GT613-CTC177BH2 No vertical hold
> Hello to all.
> This GE TV 27GT613-CTC177 BH2 has a fast vertical roll.
> I thought this to be a piece of cake,but by now it gives me a hard time
>
> I have checked the voltages on the vert IC U4501 and they are all within
> specs.
> Only the frequencies are 45 hz on pin one and pin 3 instead of 59 hz.
> And on pin 5 the vert out I get a horizontal frequency of 15734 Hz
>
> I have checked C4505-C4506 they are OK
> I am running out of idea's and am wondering if someone has a clue to this
> problem.
> thank you in advance
> John H Smit
> Smit's TV Service
> Box10
> Gunnison Utah 84634
> 800-355-4948 Phone&Fax
> 435-528-7955 Phone&Fax
> jsm@xxxxxxxxxx
>
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