Your Digital Media Has Never Looked So Good

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by barrygordon
Wed Jan 24, 2007 7:12 pm
Forum: PhotoBridge General Discussion
Topic: Dead Photobridge (MB not PSU)
Replies: 9
Views: 9315

The regulater is a national semiconductor part LP3965EMP-ADJ. All three regulaters are the same. The ADJ means adjustable based on external componets. The EMP designation is to get the right physical configuration, SO223-5 case if I remember correctly. They are $2.88 apiece from Digikey. The problem...
by barrygordon
Wed Jan 24, 2007 2:04 am
Forum: PhotoBridge General Discussion
Topic: No Power / No Component Video
Replies: 358
Views: 349310

Yes that is a classic sign. is it also cool to the touch on the left hand side where the PSU is? That is another clue. Is it a Rev A or a Rev B? Dead units are going for about $50 on eBay.
by barrygordon
Sat Jan 20, 2007 7:18 am
Forum: Third-Party Applications
Topic: Roku Telnet
Replies: 16
Views: 18457

My file etc/resolve/conf l has two lines: search ati-stw nameserver 192.168.1.1 Not being a Linux/Unix person I am not sure what they mean. 192.168.1.1 is the main router for the house. It is not (to my knowledge) a name server. I just changed it to point to the DNS server I use for my world and it ...
by barrygordon
Wed Jan 17, 2007 3:23 am
Forum: PhotoBridge General Discussion
Topic: No Power / No Component Video
Replies: 358
Views: 349310

PSmith, I just checked my ATX pinout document. You are right it is the green wire, but it is on pin #14.

Since you will be fixing MB's does that mean you have a part#/source for the VR? If so could you share that? I think I can handle the SMT work or get someone local to do it for me.
by barrygordon
Tue Jan 16, 2007 11:52 am
Forum: PhotoBridge General Discussion
Topic: No Power / No Component Video
Replies: 358
Views: 349310

On an ATX power supply there is a lead that turns on power. Although the PSU is fired up, the voltages to the board are not present except for a special 5 volt line unless the PON line is set to ground. It is the purple wire, and I think it is pin 14. The special 5 volt wire is there for such things...
by barrygordon
Mon Jan 15, 2007 1:39 pm
Forum: PhotoBridge General Discussion
Topic: No Power / No Component Video
Replies: 358
Views: 349310

The output voltages of 1.8, 1.5 and 2.5 are fairly standard. Most SMT VR's I have looked at have 1 pin on one side and 3 pins on the other. The one in the PB is a 1x4 configuration. I am not even sure what that package designation is. When I get some time I will check the voltages on the other pins ...
by barrygordon
Sun Jan 14, 2007 2:43 am
Forum: PhotoBridge General Discussion
Topic: No Power / No Component Video
Replies: 358
Views: 349310

I am trying to locate the part. The number I read was 0GA3 LBRB (is that printing small) and have had no luck on the web. I have sent a note to Roku asking for the mfg & part number. Maybe they even have a schematic or parts list but I figured just the part number for now. Oh well I guess we jus...
by barrygordon
Sat Jan 13, 2007 5:17 pm
Forum: PhotoBridge General Discussion
Topic: No Power / No Component Video
Replies: 358
Views: 349310

To dgburns; your point on MB failure was well taken, however I am in a situation where the PSU is fine but the MB is NFG. This means to me that the MB failed on it own without being helped by a PSU going on the Fritz.
by barrygordon
Sat Jan 13, 2007 5:14 pm
Forum: PhotoBridge General Discussion
Topic: No Power / No Component Video
Replies: 358
Views: 349310

I just checked my non functioning Roku. The PSU is fine. All voltages correct. The symptom is that the power switch does nothing, The power light is always off, and the busy light is always on. The test points at the on board voltage regulaters (?) are as follows U23 TP58 2.52 U20 TP45 1.81 U12 TP29...
by barrygordon
Fri Jan 12, 2007 6:19 am
Forum: SoundBridge General Discussion
Topic: Poor service from Roku
Replies: 10
Views: 6731

RokuMike et al. I have done the roku "Photobridge" repair thing twice already. In one case it was a failed PSU which I can now fix myself and in the other a failed motherboard which I can not. Offering to supply a Photobridge refurb unit at $200 is a bit much since the expected lifetime in...
by barrygordon
Wed Jan 10, 2007 4:32 pm
Forum: SoundBridge General Discussion
Topic: Poor service from Roku
Replies: 10
Views: 6731

You have to be kidding. Just look at the way Roku supported the Photobridge failures. I just bought a Slimdevices Squeezebox because of Roku's attitude to it's customers. I will never buy another Roku product. They claimed problems with their contract mfg, but who selected the mfg? It is Roku's issu...
by barrygordon
Fri Jan 05, 2007 1:02 pm
Forum: PhotoBridge General Discussion
Topic: No Power / No Component Video
Replies: 358
Views: 349310

The fan is probably a good idea as the second most likely failure mode is a bad mother board which I suspect might also be due to a heat issue.
by barrygordon
Wed Jan 03, 2007 9:22 pm
Forum: Third-Party Applications
Topic: Roku Telnet
Replies: 16
Views: 18457

I get exactly the same results when I ping the Roku.
by barrygordon
Tue Jan 02, 2007 9:07 pm
Forum: Third-Party Applications
Topic: Roku Telnet
Replies: 16
Views: 18457

My bash profile under Root is exactly the same as yours. The delay is about 15 secnds from the time the connection is made until the telnet program gets the login prompt and logs in.

Just a typical Roku puzzle.

Thanks for all for trying to assist.
by barrygordon
Tue Jan 02, 2007 7:09 pm
Forum: PhotoBridge General Discussion
Topic: Dead Photobridge (MB not PSU)
Replies: 9
Views: 9315

Good questions. If the proper power supply voltages are at the motherboard connector, then the Power supply is probably Okay. If one of the voltages is missing, is low (by 10% or more) or has a bad ripple factor (you would need an oscilliscope to see that) then it is AT LEAST a bad power supply. The...
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