Search found 6 matches
- Sat Mar 30, 2024 8:35 am
- Forum: TYT MD-9600 / Retevis RT-90
- Topic: Westcom DM880B
- Replies: 8
- Views: 3861
Re: Westcom DM880B
Your main problem may be internal PCB damage. The PCB is an 8 layer board with the 12V supply running on one of the internal layers. The place you can see the burning is where the internal layer links to the bottom layer. If it has got hot enough to damage the insulation between layers then it migh...
- Fri Mar 29, 2024 2:17 pm
- Forum: TYT MD-9600 / Retevis RT-90
- Topic: Westcom DM880B
- Replies: 8
- Views: 3861
Re: Westcom DM880B
The burnt area in your picture is not a component, it is a PCB track. This track links the 12V Battery supply (on internal PCB layer 4) to the 'always on' 4V regulator that in turn supplies the 3V3 for the main processor. As this is a multi layer board you may have some internal damage which would ...
- Fri Mar 29, 2024 2:08 pm
- Forum: TYT MD-9600 / Retevis RT-90
- Topic: Westcom DM880B
- Replies: 8
- Views: 3861
Re: Westcom DM880B
There are no board layout / PCB files Someone posted and old schematic a few weeks ago, but apparantly its an old version of the schematic and the newer radios have some changes to the electronics, hence its unknown how correct any part of the old schematic is Thank you Roger. Yes I found the schem...
- Fri Mar 29, 2024 1:39 am
- Forum: TYT MD-9600 / Retevis RT-90
- Topic: Westcom DM880B
- Replies: 8
- Views: 3861
Re: Westcom DM880B
Ok, thanks for clarifying that.
One photo shows the entire board with a red dot signifying the location of burnt component. The other is a closer view of the failed part.
Hopefully someone can share the board layouts and determine what the toasted component is.
One photo shows the entire board with a red dot signifying the location of burnt component. The other is a closer view of the failed part.
Hopefully someone can share the board layouts and determine what the toasted component is.
- Thu Mar 28, 2024 2:08 pm
- Forum: TYT MD-9600 / Retevis RT-90
- Topic: Westcom DM880B
- Replies: 8
- Views: 3861
Westcom DM880B
Hello, I'm looking for help with a Westcom DM-880B which is allegedly a rebranded TYT MD-9600/Retevis RT-90. Need a schematic with a board layout diagram. This is a friend's transceiver that stopped functioning so I'm looking into it for him. The fan runs continuously, when connected to power, yet t...
- Thu Mar 28, 2024 1:43 pm
- Forum: New members must post here first
- Topic: Hello to the group.
- Replies: 1
- Views: 2287
Hello to the group.
Name here is Tom from Michigan. Been a Ham since 2005 and enjoy the hobby so much I'll probably put a rig in my casket with a ground mounted vertical next to my tombstone hi hi.
73 de N8ZI dit dit
73 de N8ZI dit dit