12 May
2020
12 May
'20
5:47 p.m.
I have been looking at the flyback transformer from my VAXmate. I think it
could have failed but I can't be completely sure. I have posted a
description here:
https://robs-old-computers.com/2020/05/12/vaxmate-flyback-transformer/
Can anyone offer an opinion?
Thanks
Rob
13 May
13 May
3:19 a.m.
Rob Jarratt via cctalk wrote:
I have been looking at the flyback transformer from my
VAXmate. I think it
could have failed but I can't be completely sure. I have posted a
description here:
https://robs-old-computers.com/2020/05/12/vaxmate-flyback-transformer/
Can anyone offer an opinion?
Thanks
Rob
Hi Rob,
I think that the FBT is bad and it is the cause for overloding that
diode in the PSU.
This is an usual scenario for old Monitor Hardware, nothing new.
The Epoxy in the FBT gets hard and brittle over the time and therefore
it cracks internally..causing winding shorts or opens.
Look if you can get an replacement FBT somwehre on the surplus market.
Please post all the numbers on the FBT-Label..if any exists.
Regards,
Holm
--
Technik Service u. Handel Tiffe, www.tsht.de, Holm Tiffe,
Freiberger Stra?e 42, 09600 Obersch?na, USt-Id: DE253710583
info at tsht.de Fax +49 3731 74200 Tel +49 3731 74222 Mobil: 0172 8790 741
4:03 a.m.
-----Original Message-----
From: cctalk <cctalk-bounces at classiccmp.org> On Behalf Of Holm Tiffe via
cctalk
Sent: 13 May 2020 08:19
To: Rob Jarratt via cctalk <cctalk at classiccmp.org>
Subject: Re: Has My VAXmate Flyback Transformer Failed?
Rob Jarratt via cctalk wrote:
in the
I have been looking at the flyback transformer
from my VAXmate. I
think it could have failed but I can't be completely sure. I have
posted a description here:
https://robs-old-computers.com/2020/05/12/vaxmate-flyback-transformer/
Can anyone offer an opinion?
Thanks
Rob
Hi Rob,
I think that the FBT is bad and it is the cause for overloding that diode PSU.
This is an usual scenario for old Monitor Hardware, nothing new.
The Epoxy in the FBT gets hard and brittle over the time and therefore it
cracks
internally..causing winding shorts or opens.
Look if you can get an replacement FBT somwehre on the surplus market.
Please post all the numbers on the FBT-Label..if any exists.
I have already tried that but I will try again. For information the label
says:
15-27188-01
TAI-HO TH-1802B
Thanks
Rob
Regards,
Holm
--
Technik Service u. Handel Tiffe, www.tsht.de, Holm Tiffe,
Freiberger Stra?e 42, 09600 Obersch?na, USt-Id: DE253710583
info at tsht.de
Fax +49 3731 74200 Tel +49 3731 74222 Mobil: 0172 8790
741
1512
days inactive
1513
days old
2 comments
2 participants
participants (2)
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holm＠freibergnet.de -
robert.jarratt＠ntlworld.com