#293

Some where on my internet travels I have seen information on replacing components of that DC to DC supply.?? The replacement cobbled up for the TS-850 has been very successful for me at least and rather than trying to figure one out for the TS-870,? I thought I would ask.

#294

开云体育

Hi Gordon,

?

Not sure if this helps but I had what I think is probably the same or very similar bard some years ago in TR751A and TR851A transceivers.

?

This article may help .

?

Good luch.

?

73….Eric VK2VE.

?

Show quoted text

From: Kenwood-Amateur-Radio@groups.io <Kenwood-Amateur-Radio@groups.io> On Behalf Of Gordon via groups.io
Sent: Sunday, April 7, 2024 1:07 PM
To: Kenwood-Amateur-Radio@groups.io
Subject: [Kenwood-Amateur-Radio] TS-870 negative DC supply for the ALC

?

Some where on my internet travels I have seen information on replacing components of that DC to DC supply.?? The replacement cobbled up for the TS-850 has been very successful for me at least and rather than trying to figure one out for the TS-870,? I thought I would ask.

Virus-free.

#295

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It appears that Mouser has plenty of the LT1054 chips in stock

?

73….Eric VK2VE.

?

Show quoted text

From: Eric van de Weyer <evdw@...>
Sent: Sunday, April 7, 2024 4:22 PM
To: 'Kenwood-Amateur-Radio@groups.io' <Kenwood-Amateur-Radio@groups.io>
Subject: RE: [Kenwood-Amateur-Radio] TS-870 negative DC supply for the ALC

?

Hi Gordon,

?

Not sure if this helps but I had what I think is probably the same or very similar bard some years ago in TR751A and TR851A transceivers.

?

This article may help .

?

Good luch.

?

73….Eric VK2VE.

?

From: Kenwood-Amateur-Radio@groups.io <Kenwood-Amateur-Radio@groups.io> On Behalf Of Gordon via groups.io
Sent: Sunday, April 7, 2024 1:07 PM
To: Kenwood-Amateur-Radio@groups.io
Subject: [Kenwood-Amateur-Radio] TS-870 negative DC supply for the ALC

?

Some where on my internet travels I have seen information on replacing components of that DC to DC supply.?? The replacement cobbled up for the TS-850 has been very successful for me at least and rather than trying to figure one out for the TS-870,? I thought I would ask.

Virus-free.

#296

Thanks for the suggestion and the link Eric.? I will look into that one as well, 73.. Gord. VE5UJ

On Sunday, April 7, 2024 at 12:26:23 a.m. CST, Eric van de Weyer <groups.io@...> wrote:

It appears that Mouser has plenty of the LT1054 chips in stock

?

73….Eric VK2VE.

?

Show quoted text

From: Eric van de Weyer <evdw@...>
Sent: Sunday, April 7, 2024 4:22 PM
To: 'Kenwood-Amateur-Radio@groups.io' <Kenwood-Amateur-Radio@groups.io>
Subject: RE: [Kenwood-Amateur-Radio] TS-870 negative DC supply for the ALC

?

Hi Gordon,

?

Not sure if this helps but I had what I think is probably the same or very similar bard some years ago in TR751A and TR851A transceivers.

?

This article may help .

?

Good luch.

?

73….Eric VK2VE.

?

From: Kenwood-Amateur-Radio@groups.io <Kenwood-Amateur-Radio@groups.io> On Behalf Of Gordon via groups.io
Sent: Sunday, April 7, 2024 1:07 PM
To: Kenwood-Amateur-Radio@groups.io
Subject: [Kenwood-Amateur-Radio] TS-870 negative DC supply for the ALC

?

Some where on my internet travels I have seen information on replacing components of that DC to DC supply.?? The replacement cobbled up for the TS-850 has been very successful for me at least and rather than trying to figure one out for the TS-870,? I thought I would ask.

Virus-free.

#297

Just a thought, check those electrolytics?near that IC.

Bob W4JFA

Show quoted text

On Sun, Apr 7, 2024 at 8:17?AM Gordon via <ve5uj=yahoo.com@groups.io> wrote:

Thanks for the suggestion and the link Eric.? I will look into that one as well, 73.. Gord. VE5UJ

On Sunday, April 7, 2024 at 12:26:23 a.m. CST, Eric van de Weyer <groups.io@...> wrote:

It appears that Mouser has plenty of the LT1054 chips in stock
?
73….Eric VK2VE.
?
From: Eric van de Weyer <evdw@...>
Sent: Sunday, April 7, 2024 4:22 PM
To: 'Kenwood-Amateur-Radio@groups.io' <Kenwood-Amateur-Radio@groups.io>
Subject: RE: [Kenwood-Amateur-Radio] TS-870 negative DC supply for the ALC
?
Hi Gordon,
?
Not sure if this helps but I had what I think is probably the same or very similar bard some years ago in TR751A and TR851A transceivers.
?
This article may help .
?
Good luch.
?
73….Eric VK2VE.
?
From: Kenwood-Amateur-Radio@groups.io <Kenwood-Amateur-Radio@groups.io> On Behalf Of Gordon via
Sent: Sunday, April 7, 2024 1:07 PM
To: Kenwood-Amateur-Radio@groups.io
Subject: [Kenwood-Amateur-Radio] TS-870 negative DC supply for the ALC
?
Some where on my internet travels I have seen information on replacing components of that DC to DC supply.?? The replacement cobbled up for the TS-850 has been very successful for me at least and rather than trying to figure one out for the TS-870,? I thought I would ask.

Virus-free.

#298

开云体育

Hi Bob,

?

If I remember correctly, the problem on the original boards was one or two of the SMD transistors. I’d have to go digging to be certain, though.

?

I seem to remember repairing one of the boards in one of my radios at the time and then making up a board with the LT1054 chip for the other radio.

?

I also replaced the volume/squelch pots in both radios as well at the time.

?

It is probably about 7 or 8 years ago now as I haven’t had those radios for about 6 years now as I bought a nice new TS2000X which does everything that the others did and a lot more. ?

?

73….Eric VK2VE.

?

Show quoted text

From: Kenwood-Amateur-Radio@groups.io <Kenwood-Amateur-Radio@groups.io> On Behalf Of Bob
Sent: Sunday, April 7, 2024 10:26 PM
To: Kenwood-Amateur-Radio@groups.io
Subject: Re: [Kenwood-Amateur-Radio] TS-870 negative DC supply for the ALC

?

Just a thought, check those electrolytics?near that IC.

Bob W4JFA

?

On Sun, Apr 7, 2024 at 8:17?AM Gordon via <ve5uj=yahoo.com@groups.io> wrote:

Thanks for the suggestion and the link Eric.? I will look into that one as well, 73.. Gord. VE5UJ
?
?
?
On Sunday, April 7, 2024 at 12:26:23 a.m. CST, Eric van de Weyer <groups.io@...> wrote:
?
?
It appears that Mouser has plenty of the LT1054 chips in stock
?
73….Eric VK2VE.
?
From: Eric van de Weyer <evdw@...>
Sent: Sunday, April 7, 2024 4:22 PM
To: 'Kenwood-Amateur-Radio@groups.io' <Kenwood-Amateur-Radio@groups.io>
Subject: RE: [Kenwood-Amateur-Radio] TS-870 negative DC supply for the ALC
?
Hi Gordon,
?
Not sure if this helps but I had what I think is probably the same or very similar bard some years ago in TR751A and TR851A transceivers.
?
This article may help .
?
Good luch.
?
73….Eric VK2VE.
?
From: Kenwood-Amateur-Radio@groups.io <Kenwood-Amateur-Radio@groups.io> On Behalf Of Gordon via
Sent: Sunday, April 7, 2024 1:07 PM
To: Kenwood-Amateur-Radio@groups.io
Subject: [Kenwood-Amateur-Radio] TS-870 negative DC supply for the ALC
?
Some where on my internet travels I have seen information on replacing components of that DC to DC supply.?? The replacement cobbled up for the TS-850 has been very successful for me at least and rather than trying to figure one out for the TS-870,? I thought I would ask.
?
Virus-free.