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I picked up a cheap non-working Quadra 610. It was a bit of a gamble, the auction didn't show an inside photo so this could've been a battery explosion disaster but thankfully not!

This one is a work in progress, it isn't done yet. Here's what I've done so far...

 

Board before any work done:

 

500687F9-B19A-48DF-9C8F-F23D7F2D283D_1_105_c.thumb.jpeg.f28f663ec302a43ef1bbe95e90d1e8c7.jpeg

 

On closer inspection, definitely a lot of capacitor leakage...

 

F4DD1FC5-D59E-48F6-8F9E-45E9FA68C328_1_105_c.thumb.jpeg.5809fe1ee65475a5045077e3dbb141a8.jpeg

 

And it didn't stop there...

 

A93A037F-CF6C-4D2A-AF02-95F9921D7100_1_105_c.thumb.jpeg.8d281a710755c7253d184e0341890d22.jpeg

 

With caps removed, the true extent of the damage is revealed. This almost looks as bad as PRAM battery leakage!

 

A30218B9-765B-47CD-A361-FB330793C14C_1_105_c.thumb.jpeg.9db6c61e61381816459b80936c46a3c0.jpeg

 

U46 is not happy, seen better days:

 

A0B47621-AB84-4B57-A708-5D9ED6A95DE5_1_105_c.thumb.jpeg.3b92d5620cdadc832432241875eb8420.jpeg

 

Time for cleanup...Lots of flux and solder wick action to get rid of as much crud as possible before scraping away the rest.

 

B8491899-E530-4460-A3EE-F9772CADFE05_1_105_c.thumb.jpeg.fdaca269bc3516b01b1cd15d7ddb2c7c.jpeg

 

After initial cleaning, things are looking better but still not great:

 

F41B9690-F8FC-4EDA-904F-DF29BD9C1E44_1_105_c.thumb.jpeg.2a24d38029eb62f6fa97b4f9ca935885.jpeg

 

DA12FB37-819B-4C96-997A-73CC8ADF2766_1_105_c.thumb.jpeg.d8a5cdeb7e43ff8f2516b426cde46b72.jpeg

 

EC747E77-6CBB-4DD5-9D2E-0DA0C92078D4_1_105_c.thumb.jpeg.d63cf0ae923b76d50e4eaf3260acde53.jpeg

 

So I decided to remove U46, RP3, RC5 and RC6. Revealing the mess underneath these ICs...

 

BB2B5A4B-83DB-4041-A193-796D1E5A9038_1_105_c.thumb.jpeg.22e8f55f2f0be1d46f37ff4ac909cf85.jpeg

 

4CD1B706-7DC6-43B3-AF3F-E42125D21EB1_1_105_c.thumb.jpeg.5208cb20d739fefa8af4330f4a9eda90.jpeg

 

 

907F519C-FADF-489C-B689-0AFA7C1FAF4D_1_105_c.thumb.jpeg.4ecd040faa6b178b943c761ef622e307.jpeg

 

 

 

CA700202-3A82-4BD6-AB8F-244387E64C16_1_105_c.thumb.jpeg.b6f44f0824b6dcba3382893e4c8a9d34.jpeg

 

You can never have enough flux:

 

F8FAAC01-ACCB-41A3-A820-C9E37700D368_1_105_c.thumb.jpeg.92a112ed5767e251027170507f87195f.jpeg

 

And afterwards:
 

4ADB4DA2-4127-4088-8808-C4B800529D13_1_105_c.thumb.jpeg.ed1994d441ab92bb84f6ce7e44edd1e6.jpeg

 

The others cleaned up well too:
 

 

47712F25-11F5-487B-9E1C-58A48F3D05DB_1_105_c.thumb.jpeg.c29c7c4f39a2fde92820fae4e4b5c7c6.jpeg

 

8096A271-4305-48A3-BDE1-EB967CA231A1_1_105_c.thumb.jpeg.e8449eb47f7eff8c357024ea77ad0bfe.jpeg

 

The IC removed from U46, when I tried to clean the pins, they just started disintegrating, so I think it's had it.

 

The marking on the IC at U46 is TIF306 GR HC132.

 

D82B2683-C337-4459-A2D2-9812BFA6442B_1_105_c.thumb.jpeg.b33ae6cf7d163291f4a99da33f063d1f.jpeg

 

The other ICs went back on, they were still clean enough to re-use:
 

B66A799C-5F9B-407D-BE07-C7036B691C3B_1_105_c.thumb.jpeg.e03ae28867a6230e256cc768f52ee67e.jpeg

 

55A0EB55-897C-41E6-B868-ED597D7B55BB_1_105_c.thumb.jpeg.7ea187b5797253235dd3dac67d528f65.jpeg

 

And then I replaced all the caps:
 

53ACB553-09FE-4855-8572-8A9513B033F3_1_105_c.thumb.jpeg.c8ac4239da9ce315017d0fd3c20431df.jpeg

 

I will need to order a replacement for U46, but before that, tomorrow (maybe) I will move onto taking a look at the power supply to see if I need to order any parts for that as well.

 

Thanks for reading.

 

 

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Nice clean up @joshc; hopefully your Q610 will make it out of the woods.  They're nice machines to use.  After one failed death chime/recap/deep clean in my Q610, I converted a Centris 610 to Q610 status with the Houdini II DOS card.

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Posted (edited)

I have a Centris 610 that I have NOT been able to get going (start-up chime followed by death chimes) despite recapping, chip leg reattachment, ultrasonic cleaning. I wonder if there could still be gunk under an IC after ultrasonic cleaning...  Also have you checked the corner of the large IOSB chip (above the CPU) to see if there is any leg damage near capacitor C45? that was problem spot for me.

 

On 3/31/2021 at 10:37 PM, joshc said:

I will move onto taking a look at the power supply to see if I need to order any parts for that as well.

 

FYI - Not sure if you can test the power supply without having it connected to the logic board, disconnected you won't read 12v, 5v, etc with a meter as it apparently needs load to regulate properly. And also not sure you want to connect the PS to the board without U46.

Edited by Fizzbinn
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20 hours ago, Daniël Oosterhuis said:

@joshc On my Q610, U46 is a NatSemi/Fairchild MM74HC 132M.

 

Thanks

 

20 hours ago, Fizzbinn said:

FYI - Not sure if you can test the power supply without having it connected to the logic board, disconnected you won't read 12v, 5v, etc with a meter as it apparently needs load to regulate properly. And also not sure you want to connect the PS to the board without U46.

 

Yep, I certainly won't be doing that. I meant that I will be doing a disassembly/clean/replace caps before a test. I tend to just do this by default now as it tends to iron out any potential problems before I'm even aware of them.

 

20 hours ago, Fizzbinn said:

Also have you checked the corner of the large IOSB chip (above the CPU) to see if there is any leg damage near capacitor C45? that was problem spot for me.

 

Yup, I forgot to mention that in my post but there is cap leakage on the pins of the IOSB chip, I am not sure how best to clean that up and would rather not remove it as reattaching it looks like it would be tricky, the pins are very small. Any idea?

 

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On 4/1/2021 at 2:37 PM, joshc said:

Yup, I forgot to mention that in my post but there is cap leakage on the pins of the IOSB chip, I am not sure how best to clean that up and would rather not remove it as reattaching it looks like it would be tricky, the pins are very small. Any idea?


I’ve used dental brushes and flux cleaner, here’s a pick of what that looks like from Color Classic board:


AB031E6C-16B4-420F-83C6-2FDDEE50A7D0.jpeg.d26a06a4a6057720ff2e763e1a174b20.jpeg

 

ECF25663-FB69-49A0-8E6E-ED4517FB316C.jpeg.efacef220164ab0c42a2856f2018c97f.jpeg

 

97D8B16C-1FA6-4466-8DE6-3AFE0EBEF430.jpeg.b2ef9367daaf7d544399ffa894747bec.jpeg

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