DFF1-UHD Issues

[zundels]

I have a DFF1-UHD networked with a TZT14 and a pair of B175 transducers (HF-LF). When I power the system up the bottom finder works normally and then it will start to slowly lose power. The bottom will start to grow faint and I can turn up the gain to 100 and it has no effect. I will eventually lose the bottom and not be able to read anything. It does this in both high frequency and low frequency. The only way I have been able to fix this is to disconnect the power from the DFF1. Once I disconnect the power and then reconnect it the unit works flawlessly for the remainder of the day. Any idea what may be causing this? When it works I am extremely happy with the performance, it is just a pain to always have to crawl under the console to disconnect the power.

 

[Snips]

Zundels,
I am curious to get a few more details.
Does this happen 100% of the time or only sometimes? When it fades away, does it happen after 5mins, 30 mins, 1 hr or it will vary? Also are you using an Auto TX Rate?

Snips

 

[zundels]

It doesn't always happen but seems to be happening more frequently. It will usually take about 30 min to an hour to fade out. It will eventually get to where I am just showing a thin line for the bottom and no other details. When I unplug and then replug the power the screen will look normal work properly. I usually set the TX rate on 20 (I think this is the highest setting). The TX rate does not seem to make any difference once the unit starts to fade/lose power. Gain doesn't make much difference either; I can put the gain up to 100 and still barely read bottom and have very little clutter on the screen. Once I unplug/replug the power, I have to back the gain off to a normal setting.

 

[Snips]

Zundels,
Thanks for the additional information.
Probably best to send it in so we can run it on the bench for a while to see if we can find what is happening. If you let me know the serial number I will let the service department know the background and what to look for.

Send it to
Furuno USA
4400 N.W. Pacific Rim Blvd
Camas, WA. 98607-9408

Snips

 

[zundels]

I will probably wait until this fall to send it in (don't want to be without it for the next few weeks). I will get the serial number and reply to this thread before I send it.

 

[zundels]

It looks like we are going to send it in a little earlier than I thought (We are sending it with the TZT14 which is having a separate issue). The serial number for the DFF1-UHD is 8861-0726. Please let the service department know what to look for and I will be putting a letter in with the units as well.

 

[Snips]

Zundels,
OK, I will let them know it will be coming in.

Snips