Re: TECH: Battlezone G05-805 monitor question

From: Douglas Gauck <0k64dgau_at_gte.net>
Date: Mon Sep 23 2002 - 00:48:47 EDT

Hi Dave (and others),

What about the low-voltage section? B+ will vary as does the LV. I'd check
all the resistors and any caps that weren't in the kit (902/3/6/7) and
transistors. The good news is there aren't too too many. And since there are
only 3 diodes check them too, eh? Good luck.

-Douglas

on 9/22/02 8:41 PM, Commander Dave at cmdr-dave@spamcop.net wrote:

> Hi all,
>
> Got the cap kit with the transistors, installed, and there wasn't any
> change. Sigh....
> I got the freeze spray back out and if I spray the D904 HV diode a good bit,
> it does shrink the pictures very slightly, but not in frame completely.
>
> My guess is that I blew the new HV diode before I knew not to discharge the
> monitor without resistors (10 x 100K Ohm), so now I am going to replace the
> diode again and see what I get. Before I do, I need to get a sanity check:
>
> 1: When installing the HV diode (H1809/H1812), there is a stripe on one end.
> Does that stripe go toward the transformer or toward the cap that goes in
> the tube? On the schematics it has a + side marked toward the tube. I think
> I know, but just want to hear it from one of you guys. I don't feel like
> blowing another one up.
>
> 2. I am still looking for verification that swapping an H1812 for a H1809
> will work at all. If not, that might explain why things aren't working out.
>
> 3. If anyone has psychic powers, can you tell me where I put my last two
> H1812 diodes??? <grins>
>
> Thanks,
> -Commander Dave
>
> ----- Original Message -----
> From: "Commander Dave" <cmdr-dave@spamcop.net>
> To: <vectorlist@synthcom.com>
> Sent: Thursday, September 12, 2002 15:53 PM
> Subject: VECTOR: Battlezone G05-805 monitor blooming problem revisited
>
>
>> Greetings all,
>>
>> I have a Battlezone mini monitor (Electrohome G05-805 15" B&W) that still
>> has a "blooming" problem. It's not the board set as it has done this with
> 3
>> different boards.
>>
>> I have replaced the HV diode (VARO H1809 with a VARO H1812 - I couldn't
> find
>> a H1809), but it still happens after warmup. It seems to expand in all
>> directions, but horizontal seem a little more than the vertical.
>
>
> <<<<<snip>>>>>
>
>> Regards,
>> -Commander Dave
>
>
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Received on Sun Sep 22 22:13:28 2002

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