Gateway FPD2485W - capacitor related?

[king_raptor]

Re: Gateway FPD2485W - capacitor related?

On my Radio Shack DVM, it shows a 1 which is open. When I first tested, it seemed like it was showing something, but then went to 1. I'm pretty certain the fuse is bad. I just hope that's all it is.

[king_raptor]

Re: Gateway FPD2485W - capacitor related?

All it shows is IE 5A, so I assume it's a 5 amp fuse. When I say I'm tempted to jump a wire strand across, I mean literally a single, very thin wire that you would get from a strand. I would never put a complete wire strand across, that would defeat the purpose of a fuse. I think this part # from Mouser is the same...576-0453005.MR.

[retiredcaps]

Re: Gateway FPD2485W - capacitor related?

If it works, I would be more willing to order a fuse from digikey if they have it.

What ohms reading are you getting when measuring F1?

If it says 2 on the fuse F1, then I believe it is a 2A fuse. I'm not sure what voltage rating is though. It could be 2A 125V or 2A 250V. Maybe someone else with more experience can verify?

[seanc]

Re: Gateway FPD2485W - capacitor related?

Yes that's a fuse, I highly recommend you purchase a replacement fuse.
Do not jump the fuse with a wire, if there is an issue and the wire does not fail, you'll destroy your inverter and/or start a fire.

[king_raptor]

Re: Gateway FPD2485W - capacitor related?

Hello, and thanks for the quick reply. I did test the fuse in the manner that you described, but it didn't seem like I was getting a good connection, so I also tried it the way I mentioned. I attached 2 pictures for you to view. I wanted to confirm that this is indeed a fuse (I assume the F in F1 means fuse 1). I am tempted to try to jump across the fuse with a real thin wire strand or something just to confirm that it does something. If it works, I would be more willing to order a fuse from digikey if they have it. That is where I ordered my caps from. I'm sure shipping would exceed the cost of the fuse. There is nothing protruding from the backside of the circuit board, so I guess this would have to be desoldered and resoldered from the front.
Thanks,

Russell

[retiredcaps]

Re: Gateway FPD2485W - capacitor related?

If I touch DVM to ground and the other lead to one side, it buzzes, but if I put it to the other side of F1, nothing. I replaced both caps on this board because they were swollen. Assuming F1 is a fuse, and it is bad, could the swollen caps have caused the fuse to blow? If not, any advise what else to check? If it is a fuse, does anyone know where to get it and/or part#?

The way I measure a fuse is to put the multimeter (if manual) on the lowest ohms setting. Then I put red on one side and black on the other. A good fuse should measure less than 0.9 ohms depending on your multimeter.

A clear focused picture of your fuse would help. Manufacturers can change board revisions and may not use the same components even though the model number on the front of the LCD are the same.

If you are in the USA, I'm sure Digikey has a replacement fuse.

[king_raptor]

Re: Gateway FPD2485W - capacitor related?

Hello everyone, another new member here. I just inherited a Gateway LP2407 (also refered to as FPD2485W). I don't know the history of the monitor, but it has the same symptoms as posted here. When I plug it in, it makes the musical sound, and the blue power light comes on and the lights above it flash on, but then after a while the light turns orange. There is absolutely no picture being displayed. I already took the monitor apart and found quite a few caps that were bulged on the top - on all 3 boards, so I replaced all the caps but the biggie on the power supply board -the 150uF 450V one (it wasn't bulged and appears to be hard to find). So after putting it back together, I still get no display. I'm sure a lot of the capacitors were bad, so they should have been replaced, but now I'm wondering if there is a bad fuse. I checked the fuse on the power supply board (F850) and it checks out ok. I looked at the inverter board, and I'm guessing that F1 may be a fuse. If it is, It doesn't appear to be ok. If I touch DVM to ground and the other lead to one side, it buzzes, but if I put it to the other side of F1, nothing. I replaced both caps on this board because they were swollen. Assuming F1 is a fuse, and it is bad, could the swollen caps have caused the fuse to blow? If not, any advise what else to check? If it is a fuse, does anyone know where to get it and/or part#? Thanks in advance for any help. Russell

[Wrog]

Re: Gateway FPD2485W - capacitor related?

Not much of a game... hope you are a USC fan. Sounds like the inverter fuse blew, which is easy enough to test (check continuity... open = blown). Finding out why it blew may not be.

[djfourmoney]

Re: Gateway FPD2485W - capacitor related?

Need more info.. when you power up, you get no Gateway logo but is the power LED still lit? Does it stay lit as long as an input signal is present or does it go into sleep mode? If you use a flashlight in a dark room, can you see the picture?

Doesn't sound like a cap problem to me, it's probably inverter related. Still, it's a good idea to double check the state of the caps. Pics of the top/bottom of each of the boards (power/inverter and main logic) would be helpful to troubleshoot. When you take the monitor apart, remember to start on the side opposite the touch controls. There is a FFC (flat flex cable) on that side that you need to be careful with!

Thanks, I am going to watch USC/Cal first before taking it apart.

The Touch Controls still work. My room is dark, there is no Splash Screen. I switched inputs from the Media Center (VGA) to my PS2 console (Component 1) and still no picture. I connected my laptop to both VGA and DV-I, still nothing. The laptop "saw" the panel but there was no picture.

When you turn it on, I get the tones and the lights remain blue. But it will then time out and go orange.

When the game is over I'll pull it apart and take some pictures.

[Wrog]

Re: Gateway FPD2485W - capacitor related?

Need more info.. when you power up, you get no Gateway logo but is the power LED still lit? Does it stay lit as long as an input signal is present or does it go into sleep mode? If you use a flashlight in a dark room, can you see the picture?

Doesn't sound like a cap problem to me, it's probably inverter related. Still, it's a good idea to double check the state of the caps. Pics of the top/bottom of each of the boards (power/inverter and main logic) would be helpful to troubleshoot. When you take the monitor apart, remember to start on the side opposite the touch controls. There is a FFC (flat flex cable) on that side that you need to be careful with!

[djfourmoney]

Re: Gateway FPD2485W - capacitor related?

Hi, I'm new as well. I have the same Gateway Monitor it stopped working.

All else seems to work, I just have no picture. No Gateway splash screen, other inputs don't work (PS2 console) either.

I was watching it about 2 weeks ago (I use it as my TV for my Media Center PC) and it just went black all of a sudden.

I went searching on Google and found this forum. I haven't cracked it open yet but I will be this weekend. I guess I could try replacing caps, is that usually the problem with these things?

Thanks

[Wrog]

Re: Gateway FPD2485W - capacitor related?

Yeeeehaaa!!! I took a tiny flat blade screwdriver and double magnifying glasses and carefully pealed back about 1/8" of the plastic cover on the FFC and trimed off the area where the trace was broken. I plugged it in and low and behold: my monitor works. So, it was the caps. I can't thank you guys enough for our advice and encouragement. I was so ready to just pack it up and send it off to a repair shop (for about $140). But you talked me into doing it myself and you are right. I feel great now! Thanks again. I owe you, big time.

Someone was burning the midnight oil. Congratulations, that's what makes this community a great one!

[Wrog]

Re: Gateway FPD2485W - capacitor related?

Wrog, from the communications I have had with Scott (LCDAlternatives) I have come to trust him, so without naming you, I sent your message on to him and asked him to check on it in case he did have a problem of which he was unaware. I also checked his web site and compared his list with yours for the FPD1975W. Two very good things came from this that show Scott will work to make things right.

I believe your list was so drastically different from his is because there are actually 3 different versions of the 1975. I believe you must have seen the kit for the first version. It was very different from your list. However, the version J list is almost exactly the same as yours (it is not the same. I'll get to that in a momet). This misunderstanding has let Scott see that his web site needed to be more clear. He is in the process of re-doing his site to make it more clear that sometimes a model could have several versions that all need very different kits.

The other good that came from this is that Scott noticed the same thing I did: in the kit for version J the count for 2 caps that were off by 1 each. 1 count was 1 too many and the other was 1 too few. He, of course, has fixed that, too. I do like and trust this guy. If something is wrong, he takes action to fix it ASAP and you can't ask for more than that.

That is really good to hear. Pre-made kits are very convenient but subject to confusion if there are multiple revisions (and if one happens to be bad/missing etc. there are no spares!). It's good to see that he's open to feedback and takes action quickly. I'm sure that will earn him a good amount of business and goodwill!

[larrybrownsr]

Re: Gateway FPD2485W - capacitor related?

Yeeeehaaa!!! I took a tiny flat blade screwdriver and double magnifying glasses and carefully pealed back about 1/8" of the plastic cover on the FFC and trimed off the area where the trace was broken. I plugged it in and low and behold: my monitor works. So, it was the caps. I can't thank you guys enough for our advice and encouragement. I was so ready to just pack it up and send it off to a repair shop (for about $140). But you talked me into doing it myself and you are right. I feel great now! Thanks again. I owe you, big time.

[larrybrownsr]

Re: Gateway FPD2485W - capacitor related?

You've got it exactly right... I mentioned in another thread (today, ironically) that I couldn't remember if the clip pulled out or swung upwards. Caps should arrive any day now, good luck with it!

The caps arrived and I was able to replace all of the caps on the power supply board without any problems. But, as I tried to insert the FFC into the clip connector on the plastic frame so I could test, one of the conductor strips on the FFC came loose and bent. When i tried to streighten it and perhaps superglue it back down on the FFC it broke off and I can't find it. Am I shafted or is there something I can do? Is the FFC available for sale anywhere? ...or am I able to peal back some of the plastic cover on the FFC and cut the tip off and use that? You have been great so far. I hope you can come up with some magic, now, Again, thank you, very much.

[larrybrownsr]

Re: Gateway FPD2485W - capacitor related?

Recap as a first step then move on to other troubleshooting if that does not resolve the problem. LCDAlternatives seems to use good brands, so you are covered there. If you want to save a little money next time, put together a list of what you need and folks here will give suggestions on what to buy.

Hmm.. after looking at one of their other Gateway models (FPD1975W), their cap list is different than what I've seen for this model. Their website says there are 6 different cap values (total of 7) but I just had one open here a few days ago and replaced a total of 10 on the power board (only 3 different cap values; there weren't 1000uF, 680uF or 150uF caps on my board). Definitely double check what you receive versus what you need before you start working on it! If there is any doubt, post pics with your questions.

Wrog, from the communications I have had with Scott (LCDAlternatives) I have come to trust him, so without naming you, I sent your message on to him and asked him to check on it in case he did have a problem of which he was unaware. I also checked his web site and compared his list with yours for the FPD1975W. Two very good things came from this that show Scott will work to make things right.

I believe your list was so drastically different from his is because there are actually 3 different versions of the 1975. I believe you must have seen the kit for the first version. It was very different from your list. However, the version J list is almost exactly the same as yours (it is not the same. I'll get to that in a momet). This misunderstanding has let Scott see that his web site needed to be more clear. He is in the process of re-doing his site to make it more clear that sometimes a model could have several versions that all need very different kits.

The other good that came from this is that Scott noticed the same thing I did: in the kit for version J the count for 2 caps that were off by 1 each. 1 count was 1 too many and the other was 1 too few. He, of course, has fixed that, too. I do like and trust this guy. If something is wrong, he takes action to fix it ASAP and you can't ask for more than that.

[Wrog]

Re: Gateway FPD2485W - capacitor related?

Even though the caps haven't arrived yet, I worked up the guts to take it apart. Sure enough, 2 caps on the power supply do appear to be swolen. That is a real spirit booster.

My biggest concern right now is trying to figure how I will be able to get the tiny cable connected back to the little Power On/Off, etc. indicator strip on the front trim. Where it connects was covered with a small piece of electrical tape. When I removed the tape, the cable came with it. It appears as if it was just connected and held in place by the tape.

There is what appears to be a connector on the small PC board on the front trim. It does have a small "lever" on it. I believe I should rotate the liver up vertical to the connector, slide the cable strip in under the lever with the 5 metal conductor strips facing down, away from the lever, then move the lever over parallel and in line with the connector.

If anyone sees this and thinks I'm full of pucky, please, let me know. Thanks.

You've got it exactly right... I mentioned in another thread (today, ironically) that I couldn't remember if the clip pulled out or swung upwards. Caps should arrive any day now, good luck with it!

[larrybrownsr]

Re: Gateway FPD2485W - capacitor related?

...I have turned it off and I'll work on it just as soon as the caps arrive.

Even though the caps haven't arrived yet, I worked up the guts to take it apart. Sure enough, 2 caps on the power supply do appear to be swolen. That is a real spirit booster.

My biggest concern right now is trying to figure how I will be able to get the tiny cable connected back to the little Power On/Off, etc. indicator strip on the front trim. Where it connects was covered with a small piece of electrical tape. When I removed the tape, the cable came with it. It appears as if it was just connected and held in place by the tape.

There is what appears to be a connector on the small PC board on the front trim. It does have a small "lever" on it. I believe I should rotate the liver up vertical to the connector, slide the cable strip in under the lever with the 5 metal conductor strips facing down, away from the lever, then move the lever over parallel and in line with the connector.

If anyone sees this and thinks I'm full of pucky, please, let me know. Thanks.

[larrybrownsr]

Re: Gateway FPD2485W - capacitor related?

As smason has already stated, I wouldn't wait too long because you will do more damage if the monitor is in constant use with this condition. When you're all done replacing everything and it works, you'll think to yourself, "Now, that wasn't so hard!"

I sent one response to this, but I don't see it, so I'll try again:
Thanks, both of you guys, Wrog and SMason. I had not thought of the additional harm I could be doing by continuing to use it. I have turned it off and I'll work on it just as soon as the caps arrive.

[Wrog]

Re: Gateway FPD2485W - capacitor related?

Thanks, Wrog. I'll follow all of your suggestions and let you know how things work out. It'll most likely be a while before I work up the guts to try it, though. Since my monitor does work OK after a 10 to 15 minute worm-up. You wouldn't know where I could get a schematic diagram of this monitor, would you?

I haven't seen any schematics posted for any Gateway monitors, but Plainbill has posted many helpful descriptions of how monitors work from a technical standpoint (Example). As smason has already stated, I wouldn't wait too long because you will do more damage if the monitor is in constant use with this condition. When you're all done replacing everything and it works, you'll think to yourself, "Now, that wasn't so hard!"