Bally Solenoid Driver Repair

[ajlaird]

Early on I mentioned additional parts I used in a more advanced kit than the standard HV Kit for this the Solenoid Driver board. This kit is not mandatory, but I find that on most of these boards, if the Transistors are faulty, something before or after are also out of tolerance or faulty.

Here's the list ;

R35 - Resistor 100K 1 Watt
R51 - Resistor 22K 1/2 Watt
R52 - Resistor 390 Ohm 1/4 Watt
R54 - Resistor 8.2K 1/4 Watt
R55 - Resistor 1.2K 1/4 Watt
R56 - Resistor 82K 1/2 Watt
VR1 - Zener Diode 140V 2 Watt
CR21 - Diode 1N4004
C27 & C28 - Capacitor 0.1uF 400V Polyester

Most of these parts SHOULD be available locally, but I bought them from Great Plains Electronics in the States.

I've generally sourced electronic parts cheaply at http://www.futurlec.com.au; they actually come from OS (Malaysia or Indonesia or ?) but the pricing is good and the postage is reasonable as well, and they don't mind hobbyist orders.

[pinnies4me]

Early on I mentioned additional parts I used in a more advanced kit than the standard HV Kit for this the Solenoid Driver board. This kit is not mandatory, but I find that on most of these boards, if the Transistors are faulty, something before or after are also out of tolerance or faulty.

Here's the list ;

R35 - Resistor 100K 1 Watt
R51 - Resistor 22K 1/2 Watt
R52 - Resistor 390 Ohm 1/4 Watt
R54 - Resistor 8.2K 1/4 Watt
R55 - Resistor 1.2K 1/4 Watt
R56 - Resistor 82K 1/2 Watt
VR1 - Zener Diode 140V 2 Watt
CR21 - Diode 1N4004
C27 & C28 - Capacitor 0.1uF 400V Polyester

Most of these parts SHOULD be available locally, but I bought them from Great Plains Electronics in the States.

I've generally sourced electronic parts cheaply at http://www.futurlec.com.au; they actually come from OS (Malaysia or Indonesia or ?) but the pricing is good and the postage is reasonable as well, and they don't mind hobbyist orders.

+1

[63wizz]

yes i get most of my parts from Futurlec as well, and the common parts i need straight away from Jaycar.

cheers Ian

[Strangeways]

I've never really ordered from futurlec etc.. Might give them a try..

I've been buying from Ed at GPE as he carries everything I need = one stop shop and his service is legendary..

[stuba]

i find futurlec are fantastic for IC's. eproms, 6821's, 6264 RAM, processors 6800's, TTL's, LM1375's. whilst they have an "au" domain the parts seem to come from thailand airmail. they are not fast, allow 1-2 weeks.

[Strangeways]

It's been a while since I've updated this guide, so here it is !

I've replaced all the components I've listing in addition to the GPE HV Kit. Of note - C26 was definitely not in good shape so it was removed and discarded. J3 was also replaced as the pins were tarnished. I plan on replacing all the connectors, as this board will be going into my treasured Paragon. All the pins will be replaced as well.

Here's a couple "after shots" of the board ;







Cable ties are tightened BEFORE soldering the legs on the capacitors. Note C23 has its legs soldered directly to the board.

Work to be done ;

All connectors
Test the board in the machine
Update the Ground (mods), as per Clay's guide


Just a quick note - I've received a couple of PMs regarding some SD boards on eBay recently.. These are NOT "tested" (if they are it would be a visual test  - they would not be working correctly ), contrary to the Auction descriptions, and the proof of this fact are that the original C23 is still soldered to the board. These caps last 10 years before they start to fail. They cost $5 to replace.. In the past, I have picked up SD Boards for $20 in better condition on eBay. It would cost an addition $20 in parts to have it rebuilt.

[studley67]

wish i read this earlier,got caught out on `factory tested` board.hv section reads 230+ at tp2!!

[Strangeways]

wish i read this earlier,got caught out on `factory tested` board.hv section reads 230+ at tp2!!

Yep - What factory "tests" these boards ??

I knew someone would get "bitten" - Sorry it was yourself !


If TP2 = TP4 you have been sold an untested and defective board.  I cannot believe people claim to have "tested" the boards, when clearly, they are defective.

[Creech]

You should ask for a refund as they are obviously not tested. What the heck does "factory tested" mean? These were built years ago so no factory would have tested them since then. More eBay BS...

[pinnies4me]

wish i read this earlier,got caught out on `factory tested` board.hv section reads 230+ at tp2!!

"Factory tested" - where is there a genuine factory anymore to test these things?

[pinnies4me]

wish i read this earlier,got caught out on `factory tested` board.hv section reads 230+ at tp2!!

mate , send me the board and i will check it for you and can fix it if needed
i know have 3 techs out back and can have it looked at
not by me as I cant but the guys out back can


mark

"PSP Factory Tested and Certified"

[Strangeways]

wish i read this earlier,got caught out on `factory tested` board.hv section reads 230+ at tp2!!

mate , send me the board and i will check it for you and can fix it if needed
i know have 3 techs out back and can have it looked at
not by me as I cant but the guys out back can


mark

Let me know if you need parts Mark. It will be the HV transistors. While you are at it - C22, C22 and most likely 2 - 3 connectors.

[studley67]

wayne sent me a e-mail telling me to send it back!will cost $10.80 postage,??should i?or shall i fix it myself,humm.

[studley67]

>
>> wayne,i purchased off you a `fully tested` high voltage/driver board.,however the high voltage section is not working,power to displays is reading 230 vdc.should be 155-190max..how would you like to resolve this annomoly,regards damien
>
>all boards are tested before shipping on a Bally Factory Test Bench

both without a load and with a load

please ship the board back to us and we will take a look at it.

i will send board back to you at your expence.only

[Strangeways]

>
>> wayne,i purchased off you a `fully tested` high voltage/driver board.,however the high voltage section is not working,power to displays is reading 230 vdc.should be 155-190max..how would you like to resolve this annomoly,regards damien
>
>all boards are tested before shipping on a Bally Factory Test Bench

both without a load and with a load

please ship the board back to us and we will take a look at it.

i will send board back to you at your expence.only

I know of one person with a Bally factory test bench - it is in Sydney. It is possible that there is another one - granted. But part of the "testing" process was not completed.

It was sold as "tested" with a 30 year old capacitor, 20 years past its "use by date", with an fault inherent of these boards. Seller should accept all responsibility and costs associated with the repair of a faulty, untested board.