[TechAssist] Re: GE TV 27GT613-CTC177BH2 No vertical hold
- From: "al m" <ampm@xxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Tue, 7 Jun 2005 17:21:23 -0400
And if the suggestion below doesn't fix it change the jungle IC, I had that
problem once on a RCA.
Al Marquardt
ampm@xxxxxxx
Al Marquardt Electronic Repair
206 W Main
Girardville Pa. 17935
----- Original Message -----
From: "John Mielke" <maintv2004@xxxxxxxxxxx>
To: <techassist@xxxxxxxxxxxxx>
Sent: Tuesday, June 07, 2005 4:37 PM
Subject: [TechAssist] Re: GE TV 27GT613-CTC177BH2 No vertical hold
>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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