PPI 2150 AM Dead! Need help or good repair person! - diyAudio
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Old 21st September 2007, 12:15 PM   #1
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Unhappy PPI 2150 AM Dead! Need help or good repair person!

Hi all,

I would've emailed a couple local people about this, but can't since I"m a new member here. Tried to IM TO-3 through Yahoo Messenger since he's here in Phoenix, but haven't heard back. So, I'm posting here hoping to find some help with my dead PPI 2150 AM amp. I just finished reinstalling the system in my Cherokee, after not having a working deck for a while, and have no idea why the amp doesn't power up. It worked the last time my system was still running a year or so ago, but now won't even give the slightest hint of life!

I did open the amp up to solder in new power and ground wires, but I'm good at soldering and didn't see any solder bridges or potential problems before closing it up. So if someone could point me in a direction to start troubleshooting, that'd be great! Or even better, I'd like to find someone who's good with old-school PPI amps to repair it for me. I'm a bit hesitant about sending it out to someone I don't know though, which is why I'd prefer finding someone local, here in Phoenix (where PPI used to be).

Thanks in advance for any helpful replies!

Peter
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Old 22nd September 2007, 02:23 AM   #2
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Cool amp repair

want it fixed fast? Try Tran at 19th ave. North of Dunlap. Across from Taco Bell next to M&I bank. Fast and Cheap. Largest selection of PPI and Orion this side of the Miss.. Store Looks like an Amplifier Museum. Store is for sale.
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Old 22nd September 2007, 10:33 AM   #3
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Sweet! Thanks for the info. I don't suppose you know the name of the store, do you? Or is it just that obvious to find across from Taco Hell? Gonna head up there later today and see if he's open on Saturdays. If I had a name of the store, I could look up the number and save myself a trip, though...

Anyhoo...thanks again for the info. If not today, I'll definitely be up there on Monday.

Pyro
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Old 24th September 2007, 09:27 PM   #4
TO-3 is offline TO-3  Peru
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Default Re: PPI 2150 AM Dead! Need help or good repair person!

How long ago did you PM me? I have not seen it.

Quote:
Originally posted by PyroZona
Hi all,

I would've emailed a couple local people about this, but can't since I"m a new member here. Tried to IM TO-3 through Yahoo Messenger since he's here in Phoenix, but haven't heard back. So, I'm posting here hoping to find some help with my dead PPI 2150 AM amp. I just finished reinstalling the system in my Cherokee, after not having a working deck for a while, and have no idea why the amp doesn't power up. It worked the last time my system was still running a year or so ago, but now won't even give the slightest hint of life!

I did open the amp up to solder in new power and ground wires, but I'm good at soldering and didn't see any solder bridges or potential problems before closing it up. So if someone could point me in a direction to start troubleshooting, that'd be great! Or even better, I'd like to find someone who's good with old-school PPI amps to repair it for me. I'm a bit hesitant about sending it out to someone I don't know though, which is why I'd prefer finding someone local, here in Phoenix (where PPI used to be).

Thanks in advance for any helpful replies!

Peter
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Old 24th September 2007, 10:51 PM   #5
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Hi TO - 3,

Didn't PM you, I sent you an IM at your Yahoo Messenger ID that you have listed in your profile. No biggie. I took my amp over to Tran, as suggested by boxcustom above. Tran said he'd have it ready for me by 5 pm. tomorrow, for a max cost of $75...which sounds good to me!

However...if, for some reason, it still has problems, I'll be back up here looking for you, TO - 3.

Pyro
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Old 26th September 2007, 06:34 AM   #6
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Default YAY!! I have TUNES again!!

Update: to boxcustom - Thank you SOOOO much for referring me to Tran!!! He's good and he's definitely fast. Took my amp to him Monday afternoon and picked it up working this afternoon. Lickety-split! He even kept to his estimated repair price...which is good business. Needless to say...

I HAVE TUNES IN MY JEEP ONCE AGAIN!!!

After about a four year hiatus with no deck (and hence, no tunes), I can finally once again set off multiple cheap car alarms in parking lots and garages!!

Need to do some system tuning and maybe box re-construction, but I at least have the old-school, balanced, clean and full PPI sound that I've been missing for way too long.

Thanks again for the help. I'll definitely be frequenting this forum from now on.

Pyro
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Old 27th September 2007, 01:44 AM   #7
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Location: Michigan
Can someone post a contact number for Tran or the mailing address? I live in TX but I want to get a similar amp repaired. The fuse at the amp blows immediately when it turns on. I'd like to find out if Tran would be willing to repair it and ship it back.

Thanks!
Brian
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Old 27th September 2007, 10:40 PM   #8
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Default Tran

Here is his number 602-943-4706
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Old 4th November 2007, 02:44 AM   #9
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Quote:
Originally posted by babarche
Can someone post a contact number for Tran or the mailing address? I live in TX but I want to get a similar amp repaired. The fuse at the amp blows immediately when it turns on. I'd like to find out if Tran would be willing to repair it and ship it back.

Hope I'm not too late with this follow-up, but I'd suggest looking for another repair person if I were you. I just returned from picking my amp up from Tran...for the THIRD time!! After he "fixed" it the first time, the amp ran ok for almost a month...although it never really sounded as good as i remember it sounding originally. Luckily I still had my repair receipt that had a 30-day warranty written on it. So after taking it back to Tran the second time, I wired it back up and started playing it at a low volume, only to have it last a whopping 3 or 4 minutes, then POP....SNAP.........SMOOOOOOOOOKE. Back to Tran again. After having it for 3 days this time, Tran tells me that my amp won't be able to push the 2 DVC 12's that I had been running for the past 10-12 years. He pointed to the rated specs printed on the top of the amp, saying "150 watt per channel only...no more!"...essentially telling me that running the amp at 2 ohms stereo was not possible without killing it. Not acceptable as far as I'm concerned.

Then, when I went to pick up my amp today, Tran tells me that he replaced lots of things in the power supply and amplification sections, and that I can now safely run it "...at 4 ohm, at 2 ohm - whateva you wan...just no over 150 watt per channel". I just nodded, smiled, thanked him and brought the amp home...straight to my work table. After removing the drywall/sheetmetal screws that Tran had used to attach the bottom cover plate (thankfully, he did include the original 6-32 machine screws that he, for reasons I'm unaware of, had replaced), I found both banks of fets/transistors now had strips of foam rubber adhered to them and strips of sheet metal had been laid over them...so that the bottom cover could press down harder on the foam-covered banks, according to Tran. WTF!??!!?! I can also tell exactly which parts were replaced due to the extremely sloppy soldering job.

Needless to say, I was appauled. I even grabbed my digital camera and took some shots of Tran's work (I'll try and post 'em if anyone wants) before getting my soldering station ready to clean things up and re-apply a layer of thermal grease, since there is much less of that in there now than before I took it to Tran.

My question now is for TO - 3...Can you help me make sure my amp has the right parts in it so that it'll comfortably run a 2 ohm stereo load??? I realize I'm asking a lot, but if you (or someone who really knows the old AM series PPI's) could tell me what fets/transistors should be where, I'll feel much more confident about installing this once-fabulous amp back into my system. As I said above, I can post pics if that would help.

Thanks in advance,

Pyro
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Old 4th November 2007, 04:17 AM   #10
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Before you clean it up and reassemble it, reinstall the original screws in the bottom cover and make sure they can be tightened. If the holes are stripped so the screws can't be tightened, let me know.

The amp may have an intermittent problem like an intermittently shorted transformer. Sometimes it's difficult to find and may not be apparent even if you check for it.

I'd like to see the photos but I'd prefer that you zip them at full resolution and email them to me if you don't mind.

babin_perry@yahoo.com
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